If you would for your servers to be prompted for the person number at the table when placing food or drink items in the system; perform the following.
Open up ddsetup.exe. Log in. Navigate to Register, Register Definitions.
Scroll through the definitions within here and select the drop down for Person Number and select prompt.
Note that this option will only function for the particular POS that this definition is for. So if you would like it to prompt from every terminal simply, change the register definition f0r each one you wish for this function to operate at.