In the Roster tab, you have a red button at bottom Guild Control.
Click that and you get a list of ranks, and can change the descriptions of them.
At the top, there’s a drop-down from which you can select Guild Ranks, Rank Permissions, Guild Bank.
Choose Rank Permissions.
If you tick the Is Officer box for that rank, they will be able to see and invite applicants from the Guild Finder.
If you don’t, they won’t be able to invite applicants from GF, but you can tick the box below that says “Invite Member”. Then they can invite people manually, but not from the Finder.