Can’t figure out how to add/invite friends – Foursum Golf - GPS Range Finder, Scorecard & On Course Stats Tracker Review

I cannot for the life of me figure out how to invite new people to the app. There is a search feature, but it does not let you send an invitation via text/email to add new members.
Review by AGrifone on Foursum Golf - GPS Range Finder, Scorecard & On Course Stats Tracker.