Question

Which function key is used to insert a keyframe

Answer 1

To insert a new frame, select Insert > Timeline > Frame (F5)

Answer 2

To insert a new frame, select Insert > Timeline > Frame (F5). To create a keyframe, select Insert > Timeline > Keyframe (F6), or right-click (Windows) or Control‑click (Macintosh) the frame where you want to place a keyframe, and select Insert Keyframe from the context menu.