In BASE how do I change an existing FORM field in a LIST BOX field?

In Version: 6.4.4.2 in BASE how do I change an existing FORM field in a LIST BOX field? Right clicking on the item/field doesn’t bring up the ‘Replace with’ option, although it does on some fields?

Hello,

Sorry but this is not clear:

…existing FORM field in a LIST BOX field?

I can change a List Box to something else & change other fields to a List Box. Don’t understand in a LIST BOX.

Please explain what is meant here.

It is possible you are actually right clicking on what is TWO items - the label AND the control. If so just hold Ctrl key while using mouse to select field.