Permissions

When a policy exists for the event model, create, update and delete are checked automatically. Locked events can't be dragged, and their modal opens read-only.

Add your own gates:

$scheduler
    ->editable(fn (Appointment $record) => $record->status !== Status::Completed)
    ->creatable(fn () => auth()->user()->can('book'));

Turn policy checks off:

$scheduler->authorizeWithPolicies(false);