Others

How to Change the Maximum Attendees in Microsoft Bookings

Maira Mehtab Sep 20, 2026 868 views

Question details

The user needs to change the default maximum number of attendees for an existing service in Microsoft Bookings, but the input field is grayed out and cannot be edited.

Product: Microsoft Bookings
Device & OS: not provided
Scenario: Updating the attendee capacity for an existing group appointment or scheduling service.
Observed behavior: The maximum attendee field is locked and uneditable once the Microsoft Bookings service has been successfully created.

Before you start

Before making changes, take note of your current service details, descriptions, and assigned staff, as you will need this information to replicate the booking configuration.

Solution 1Recommended

Create a New Service to Update Attendee Limits

Because Microsoft Bookings does not allow the maximum attendee limit to be modified after a service is created, you must create a new service with the desired capacity and phase out the old one.

Microsoft restricts edits to the attendee limit on existing services to prevent scheduling conflicts and database errors with already booked appointments. The only official resolution is recreating the service.

Access Microsoft Bookings

Log into your Microsoft 365 account, navigate to the app launcher, and select Microsoft Bookings to open your calendar dashboard.

Navigate to Services

Click on the 'Services' tab located in the left-hand navigation menu to view your existing booking configurations.

Add a New Service

Click on the 'Add new service' button at the top of the page. Copy over the name, description, and staff assignments from your old service.

Set the New Maximum Attendees

Locate the 'Maximum number of attendees' field in the new service form and enter your required attendee limit. This field is editable during the initial creation phase.

Save and Disable Old Service

Click 'Save' to publish the new service. Finally, open your original service and disable or delete it so clients can no longer book the incorrect capacity.

Existing Appointments: Deleting the old service will not automatically move existing bookings to the new service. You will need to manually rebook or manage those existing appointments separately.

Free Microsoft Office alternative

Enhance Your Productivity with WPS Office

While managing your schedule with Microsoft Bookings, you might also need a reliable tool for handling documents, spreadsheets, and presentations. WPS Office is a robust, free alternative to Microsoft Office that perfectly balances powerful features with a lightweight design.

1. Download the Installer: Visit the official WPS Office website and click the free download button for your specific operating system.
2. Install the Software: Run the downloaded installation file and follow the on-screen prompts to set up WPS Office on your device.
3. Open and Edit Your Files: Launch WPS Office and simply drag and drop your existing Microsoft Office files into the workspace to start editing.

Fully compatible with Microsoft Office formats (.docx, .xlsx, .pptx)Lightweight application that runs smoothly on almost any deviceBuilt-in PDF toolkit for editing, merging, and converting files easilyFamiliar tab-based user interface for a seamless migration experience

microsoft office alternative - wps office

Frequently Asked Questions

Why is the maximum attendees field grayed out in Microsoft Bookings?

Microsoft locks this field after the initial service creation to maintain the integrity of your calendar and prevent capacity conflicts with appointments that have already been booked by clients.

Can I bulk-move existing bookings to the newly created service?

No, Microsoft Bookings does not currently offer a migration tool for moving appointments between services. Existing appointments must be fulfilled under the old service or manually rescheduled by the administrator.

What is the maximum number of attendees I can allow in one service?

Depending on your specific Microsoft 365 subscription and whether the service includes an online Teams meeting, the maximum attendee limit can typically be set up to 1,000 users per session.

Office Quick Solutions