Well, @Bobj was right on the money. Problem solved. I agree with others who have said the touch screen is of limited use in shooting.
To those who said, "Just RTFM" I will say that I am a manual reader. I have read the Xt-3 manual at least a couple of times. Since cameras today are just computers attached to lenses, it can be tough to absorb it all. Thanks to Bob and Jerry (for the link) for finding and confirming a solution. I am grateful.
LenB got a reaction from jerryy in Locking Focus Area X-T3