i am using Locus Map Pro and the pro-version of the companion app Locus Map for Garmin.
Since I already have routable maps on my Garmin Fenix 6X Solar, I honestly only use the app for the convenient exchange of GPX files. What I miss, though, is the ability to share points as well. I tried to export them as GPX first an then to share them with my watch, but i can't choose the companion app, if the GPX contains points instead of tracks.
As "Jan Capek" suggested (here), i opened this new thread for everybody who wants to see this feature, too. Upvote this thread to show Jan, that it is a feature, that should come to their priority list.