Custom field visibility depending on last segment at "End activity" screen

Summary:

Is it possible to control the visibility of fields at the "End activity" screen, depending on the info, if the whole activity is finished or not.

Content (required):

Our customer has some checkboxes that technicians must select, when they finish with an activity (Screenshot "2", Timesheet etc.). However, in segmentable activities, it is tedious to always need to check the boxes, even when the whole activity is not even complete yet.

We would like to change this behavior so that the checkboxes are only visible or required when the "The whole segmentable activity is finished"-checkbox is selected. (Screenshot "1")

Is there any way to achieve this with the Visual Form Editor?