How can I access menu items in other departments on the same ticket?

I have 3 departments, Restaurant, Deli and golf.

Restaurant Customers often eat and ask for deli items to be added to the bill. I cannot find a way to add these multiple department products onto one ticket.

I have tried to open the deli department, select a product and close, but the ticket does not want to close. In v2.99 this is how it is done. then opened again in a different department and works.

Help please.

Hugo