Using Keyframe Editor with Final Cut Pro
When working in Final Cut Pro, you may find it easier to use the 'keyframe editor' instead of the Filter or Motion tab. You may find the Filters or Motion tab(s) difficult to work with, because the default size of the keyframe area is squeezed within the Viewer Window.
The keyframe editor within the Final Cut Pro timeline will give you a lot more room to plot keyframes. To expand the size of the keyframe editor do the following:
Click on the 'Toggle Clip Keyframes' overlay button in the bottom left corner of the timeline window.

Place your cursor at the left edge of the timeline and hold down the mouse button. Drag the keyframe area to the desired size.
Next, control click or right click on the expanded keyframe area and choose the keyframe graph for the appropriate filter.
You can then use the 'Pen Tool' to plot keyframes for the filter that you have chosen. I think you'll find that using the keyframe editor in the timeline is an excellent way to plot keyframes.

