On organization HOME page, click desired event name under Your events
Click Setup
Click Restrictions and settings under Event setup
Enter Capacity limit
Click Save & continue
Note: Public capacity will set the maximum number for public registrations but will not prevent registrations via VIP and team invitations if room remains in the capacity; default is unlimited. Note:Capacity will set the maximum number of registration allowed including those resulting from VIP and team invitations. Set a larger number than public capacity to reserve space for those types of invitations; default is unlimited. Note: The Public capacity amount should be equal to or lower than the Capacity amount.