Default for Function, POS Lookup

This field determines which POS Command would call this lookup.

You can see the functions in the POS Command table by clicking the AssistButton to the right of the field.
It is inadvisable that you alter the contents of this field.

Example
The sales menu is open on a POS terminal. In that case, by default the ITEM command is running. If a lookup is called at that point, the Item lookup is called.