How to Select a Range of Cells from a Google Sheet for Use in a Drop-Down Field?

Is it possible to designate a range of cells that are in a single column to populate a drop-down? I have a Google sheet with healthcare insurance plan names in Column 1, but the names of the plans don’t start until Row 8 (there’s a header “Plan Name” in Row 1, and then some other irrelevant data in Rows 2-7).

How do I tell the drop-down field to begin at Row 8?