@Ezana4CE that is exactly what that feature does. You take the shot then freeze the image and make your adjustments. Only tricky thing is, if you are not on a bench rest setup, it can be difficult to press the button at the exact spot you need dead centered on the bullseye. But not to worry, you can freeze the frame as many times as it takes to get right. It's also nice you can store several zero distances per profile if I remember correct(you can at bare minimum save multiple profiles if not multiple zeros within each profile) . So if you are hunting 100 yards just select that zero from the saved profiles.
Also I recommend buying from some place that specializes in thermal and night vision. Normally you won't have to pay sales taxes at these places and you might get even better than advertised pricing with a phone call.
Thermal is awesome. I've been an addict for around 7 years now. I've had the high end stuff, some lower end stuff, and some mid range from (nvision,pulsar, and iray). But now is a great time to get into thermal. The price point you pay for the performance you get is unbelievable compared to 7 years ago when I started. And the warranties have come a long way also. Now some units have 10 year warranties although the normal seems to be 3-5 years in my experience.
Happy shooting and good luck with that rabbit hole! $$$$