Hey @rhgo1 ! For a resistance program for a 65 year old, I would most likely construct a 2 or 3-day total body training split with 1-2 rest days between sessions. It would look something like this:
Monday:
squat/leg press
incline chest press machine/DB bench
lat pull-down/row variation
abdominal
Wednesday
deadlift/hinge
overhead press machine/DB shoulder press
lat pull-down/inverted bodyweight row
abdomincal
Friday
horizontal chest press variation
lat pulldown/chest supported row
single leg movement/leg extension/leg curl
abdominal/low back
I would perform supersets on all the exercises and go through 3-4 rounds total and keep the reps between 8-12 and make sure to make each set challenging.