Meeting Types in Scheduler
This guide covers what types of meetings you can book with Nylas Scheduler and who is involved. Booking types consist of one-on-one, group, and collective events. These involve three roles: an organizer, an invitee, and an attendee.
You can configure attendee availability for bookings using the round robin and series.
When you create booking events, the resulting calendar events can be a single event, recurring event, or in a series of events during that booking timespan.
Roles
- Organizer - Meeting creator. The organizer's account is authenticated and connected to Scheduler
- Invitee - External person who can book an event, receives an invite, and can accept the invite.
- Attendee - Meeting guests, also can include people from organizer’s team or company with access to free/busy information.
One on One
One on One meetings are for a single organizer and a single invitee. This is the default for Scheduler events and meetings.

To create a one on one meeting you should set the number of participants to one and leave yourself as the organizer.

Beta
To enable Group and Collective events, contact Nylas Support.
Group
Group meetings involve a single organizer creating an event with multiple invitees and attendees. The organizer sets a single event time and a maximum capacity for attendees.

To create a group meeting, change the number of attendees. In this scenario, there is still only one organizer.

Collective
Collective meetings allow an organizer to host an event with another organizer or an assigned attendee. The event organizer can also give attendees the option to pick a mutually available time slot.
Gmail and EWS Only
This feature is available for Gmail and EWS accounts only. EAS accounts aren’t able to retrieve free-busy
information from calendars.

To create a collective scheduler, make a request to the POST manage/pages
endpoint in the Nylas Scheduler API. Make the changes explained as comments in the example request payload below. The next tab shows the response to this example.
{
//Add all the organizers access_tokens here
"access_tokens": [
"<ACCESS_TOKEN_ORGANIZER1>",
"<ACCESS_TOKEN_ORGANIZER2>",
"<ACCESS_TOKEN_ORGANIZER3>"
],
"config": {
"appearance": {
"color": "red",
"company_name": "{{Company_Name}}",
"logo": "<<YOUR LOGO>>",
"privacy_policy_redirect": "",
"show_autoschedule": true,
"show_nylas_branding": false,
"show_timezone_options": true,
"show_week_view": true,
"submit_text": "",
"thank_you_redirect": "",
"thank_you_text": "",
"thank_you_text_secondary": ""
},
"booking": {
"additional_fields": [],
"additional_guests_hidden": false,
"available_days_in_future": 30,
"calendar_invite_to_guests": true,
"cancellation_policy": "",
"confirmation_emails_to_guests": true,
"confirmation_emails_to_host": true,
"confirmation_method": "automatic",
"interval_minutes": null,
"min_booking_notice": 5,
"min_buffer": 5,
"min_cancellation_notice": 10,
"name_field_hidden": false,
"opening_hours": [
// You can set specific opening hours for each organizer here
{
"account_id": "<<ORGANIZER_1_ACCOUNT_ID>>",
"days": ["M", "T", "W", "R", "F"],
"end": "17:00",
"start": "09:00"
},
{
"account_id": "<<ORGANIZER_2_ACCOUNT_ID>>",
"days": ["M", "T", "W", "R", "F"],
"end": "13:00",
"start": "09:00"
},
{
"account_id": "<<ORGANIZER_3_ACCOUNT_ID>>",
"days": ["T", "W", "R"],
"end": "17:00",
"start": "09:00"
}
],
// Set this to collective - make sure Nylas Support has enabled this feature for you
"scheduling_method": "collective"
},
// Specify which calendar to use for booking/availability by passing calendar IDs for each account
"calendar_ids": {
"<<ORGANIZER_1_ACCOUNT_ID>>": {
"availability": ["<<ORGANIZER_1_CALENDAR_ID>>"],
"booking": "<<ORGANIZER_1_CALENDAR_ID>>"
},
"<<ORGANIZER_2_ACCOUNT_ID>>": {
"availability": ["<<ORGANIZER_2_CALENDAR_ID>>"],
"booking": "<<ORGANIZER_2_CALENDAR_ID>>"
},
"<<ORGANIZER_3_ACCOUNT_ID>>": {
"availability": ["<<ORGANIZER_3_CALENDAR_ID>>"],
"booking": "<<ORGANIZER_3_CALENDAR_ID>>"
}
},
"disable_emails": false,
"event": {
"capacity": 4, //Optional
"duration": 30,
"location": "TBD",
"title": "Meeting Title",
"participants": [
// Pass each of the users to include in every booking here (this should mirror the access_tokens array)
{
"confirmation_method": "calendar",
"email": "[email protected]",
"name": "Dorothy A",
"role": "organizer"
},
{
"confirmation_method": "calendar",
"email": "[email protected]",
"name": "Kat B",
"role": "organizer"
},
{
"confirmation_method": "calendar",
"email": "[email protected]",
"name": "Mae C",
"role": "organizer"
}
]
},
"locale": "en",
"page_hostname": "schedule.nylas.com",
"reminders": [
{
"delivery_method": "email",
"delivery_recipient": "both",
"email_subject": "Reminder - meeting about to start",
"time_before_event": 15,
"webhook_url": ""
}
],
"timezone": "America/Chicago"
},
"name": "{{SchedulerName}}",
"slug": "{{SchedulerSlug}}"
}
[
{
"account_id": "exampleaccountid1",
"calendar_id": "examplecalendaridA",
"end": 1634922900,
"host_name": "[email protected]",
"start": 1634920200
},
{
"account_id": "exampleaccountid2",
"calendar_id": "examplecalendaridB",
"end": 1634925600,
"host_name": "[email protected]",
"start": 1634922900
},
{
"account_id": "exampleaccountid3",
"calendar_id": "examplecalendaridC",
"end": 1634928300,
"host_name": "[email protected]",
"start": 1634925600
}
]
Round Robin
Round Robin meetings distribute the booking across a group of organizers. With Smart Integration configurations, you can find availability between multiple users.
The two modes for round robin meetings are Maximize Fairness and Maximize Availability. See the Round Robin Modes section for more information.

Maximize Availability
Event booking is spread evenly across calendars. This means hosts who have more availability in their calendar, will see more bookings.

Maximize Availability Examples
{
"duration_minutes": 15,
"start_time": 1647986400,
"end_time": 1647993600,
"interval_minutes": 5,
"emails": [
"[email protected]",
"[email protected]"
],
"free_busy": [],
"buffer": 30,
"round_robin": "max-availability",
"open_hours": [
{
"emails": [
"[email protected]",
"[email protected]"
],
"days": [
0,
1,
2,
3,
4
],
"timezone": "America/Los_Angeles",
"start": "10:00",
"end": "16:00",
"object_type": "open_hours"
}
]
}
{
"object": "availability",
"order": ["[email protected]", "[email protected]"],
"time_slots": [
{
"emails": ["[email protected]", "[email protected]"],
"end": 1647987300,
"end_time": 1647987300,
"object": "time_slot",
"start": 1647986400,
"start_time": 1647986400,
"status": "free"
},
{
"emails": ["[email protected]", "[email protected]"],
"end": 1647987600,
"end_time": 1647987600,
"object": "time_slot",
"start": 1647986700,
"start_time": 1647986700,
"status": "free"
},
{
"emails": ["[email protected]", "[email protected]"],
"end": 1647987900,
"end_time": 1647987900,
"object": "time_slot",
"start": 1647987000,
"start_time": 1647987000,
"status": "free"
},
{
"emails": ["[email protected]", "[email protected]"],
"end": 1647988200,
"end_time": 1647988200,
"object": "time_slot",
"start": 1647987300,
"start_time": 1647987300,
"status": "free"
},
{
"emails": ["[email protected]", "[email protected]"],
"end": 1647988500,
"end_time": 1647988500,
"object": "time_slot",
"start": 1647987600,
"start_time": 1647987600,
"status": "free"
},
{
"emails": ["[email protected]", "[email protected]"],
"end": 1647988800,
"end_time": 1647988800,
"object": "time_slot",
"start": 1647987900,
"start_time": 1647987900,
"status": "free"
},
{
"emails": ["[email protected]", "[email protected]"],
"end": 1647989100,
"end_time": 1647989100,
"object": "time_slot",
"start": 1647988200,
"start_time": 1647988200,
"status": "free"
},
{
"emails": ["[email protected]", "[email protected]"],
"end": 1647989400,
"end_time": 1647989400,
"object": "time_slot",
"start": 1647988500,
"start_time": 1647988500,
"status": "free"
},
{
"emails": ["[email protected]", "[email protected]"],
"end": 1647989700,
"end_time": 1647989700,
"object": "time_slot",
"start": 1647988800,
"start_time": 1647988800,
"status": "free"
},
{
"emails": ["[email protected]", "[email protected]"],
"end": 1647990000,
"end_time": 1647990000,
"object": "time_slot",
"start": 1647989100,
"start_time": 1647989100,
"status": "free"
}
]
}
Max Fairness
Event booking spreads evenly across calendars. This may result in participants seeing less availability when booking.

Max Fairness Examples
{
"duration_minutes": 15,
"start_time": 1647986400,
"end_time": 1647993600,
"interval_minutes": 5,
"emails": [
"[email protected]",
"[email protected]",
"[email protected]"
],
"free_busy": [],
"buffer": 30,
"round_robin": "max-fairness",
"open_hours": [
{
"emails": [
"[email protected]",
"[email protected]",
"[email protected]"
],
"days": [
0,
1,
2,
3,
4
],
"timezone": "America/Los_Angeles",
"start": "10:00",
"end": "16:00",
"object_type": "open_hours"
}
]
}
{
"object": "availability",
"order": ["[email protected]", "[email protected]"],
"time_slots": [
{
"emails": ["[email protected]", "[email protected]"],
"end": 1647987300,
"end_time": 1647987300,
"object": "time_slot",
"start": 1647986400,
"start_time": 1647986400,
"status": "free"
},
{
"emails": ["[email protected]", "[email protected]"],
"end": 1647987600,
"end_time": 1647987600,
"object": "time_slot",
"start": 1647986700,
"start_time": 1647986700,
"status": "free"
},
{
"emails": ["[email protected]", "[email protected]"],
"end": 1647987900,
"end_time": 1647987900,
"object": "time_slot",
"start": 1647987000,
"start_time": 1647987000,
"status": "free"
},
{
"emails": ["[email protected]", "[email protected]"],
"end": 1647988200,
"end_time": 1647988200,
"object": "time_slot",
"start": 1647987300,
"start_time": 1647987300,
"status": "free"
},
{
"emails": ["[email protected]", "[email protected]"],
"end": 1647988500,
"end_time": 1647988500,
"object": "time_slot",
"start": 1647987600,
"start_time": 1647987600,
"status": "free"
},
{
"emails": ["[email protected]", "[email protected]"],
"end": 1647988800,
"end_time": 1647988800,
"object": "time_slot",
"start": 1647987900,
"start_time": 1647987900,
"status": "free"
},
{
"emails": ["[email protected]", "[email protected]"],
"end": 1647989100,
"end_time": 1647989100,
"object": "time_slot",
"start": 1647988200,
"start_time": 1647988200,
"status": "free"
},
{
"emails": ["[email protected]", "[email protected]"],
"end": 1647989400,
"end_time": 1647989400,
"object": "time_slot",
"start": 1647988500,
"start_time": 1647988500,
"status": "free"
},
{
"emails": ["[email protected]", "[email protected]"],
"end": 1647989700,
"end_time": 1647989700,
"object": "time_slot",
"start": 1647988800,
"start_time": 1647988800,
"status": "free"
},
{
"emails": ["[email protected]", "[email protected]"],
"end": 1647990000,
"end_time": 1647990000,
"object": "time_slot",
"start": 1647989100,
"start_time": 1647989100,
"status": "free"
}
]
}