It may not answer what you want, but the detail callout will connect the overall plan to the Dentist rooms plan, and you set a back reference to the main plan.
I had a quick look at this. In your Section A, you have all the annotations in a group. Ungroup them, then you will be able to back reference to the correct section.
are you sure they are using actual size, have you seen them change the settings?
I know my prints are out of scale if I don’t change the settings manually.
I use keyboard shortcuts all the time, use command+alt+v for paste in place, command+up arrow to get to the next layer, command+alt+v, command+up arrow, and so on