Hi Mary Gresham
This help screen shows geni members how to link their Family Tree DNA test kits to their geni profiles:
https://help.geni.com/hc/en-us/articles/229707687-How-do-I-link-Fam...
This means that geni profiles and trees for the testers are needed for correct linking. Y DNA & mtDNA propagates up the Geni tree to 10 gens, and AT DNA for (I think) 4 gens. What’s especially nice is that conflicts can be analyzed by opening up the DNA tree.
I also use the spreadsheets at the ftDNA name projects as references within geni profile “abouts”, particularly when no one has yet uploaded, or there are many groups sorted through within the surname project.