You can add frame markers to any frame in your scene, either by right-clicking on a frame in the Timeline view, or by using the Timeline view menu.
- In the Timeline view, select the frame you want to mark.
Do one of the following:
- Right-click on the frame and, in the context menu, select Mark Frame, then the colour you want to mark the frame with.
- In the top-left corner of the Timeline view, open the View menu, and select Motion > Mark Frame, then the colour you want to mark the frame with.
A little square will appear over the marked frame, in the colour your selected.