HEllo,
WoodMart theme provides Popup element which you can add to any place of the page or a few (you need to set the individual ID for each), if you need to set the popup in footer/headr or sidebar or elsewhere, you can create HTML block, add the popup element and then insert HTML block shortcode ID. https://xtemos.com/docs/woodmart/html-blocks-2/
Promo version – where did you saw that?
No, you cannot use this popup in multiple places.
Best Regards