You can allow Multi-user to make overbookings.
Go to "Settings > Multi-User Access", select the specific multi-user via email address and click on the pen under "Actions" for the settings. Under "Grant this user access to > User actions", you can select the function "Allow overbookings (POS)".
Go to "Settings > Multi-User Access", select the specific multi-user via email address and click on the pen under "Actions" for the settings. Under "Grant this user access to > User actions", you can select the function "Allow overbookings (POS)".
Tip:
If overbooking is allowed, Multi-User can make an overbooking via dashboard booking.