In general, I know how to setup and use Instagram feed plugin but not sure that this is the right place for setting up the XTEMOS ELEMENTS
FULL WIDTH INSTAGRAM WITH CONTENT (it can be seen on https://demo.xtemos.com/basel/instagram/ , last case)
Actually, it is a regular Instagram element placed to the stretched (full-width) row. You can also import this page in Dummy Content and see how this section is created.