List the items to be on the pop-up menu in one column of a table.
Select the cells containing the item list.
Click the Format brush and choose Cell
Use the pop-up menu showing Automatic to change the cell format to Pop-up menu.
If you want the menus to include a "blank" rather than display the first item make that change with the pop-up menu below the item list in the Inspector. The 'blank' choice will be seen as "None" when the menu is opened, but will display as an empty cell when the menu is not active.
All of the cells are now pop-up menu cells.
To place the same menu anywhere in the document,
select the cell, press option-command-C to copy the format,
select the target cell, press option-command-V to paste the format.