Trying to use - RecordMyDesktop

I’m new to Linux but liking it a lot.

I’m trying to do a screen recording.

I choose Sound & Video > RecordMyDesktop and a small box appears instructing me to left drag the area I wish to record on the screen.

I then see a blue area appear but once I release the mouse it disappears.

I’m not sure then how to determine where on the screen it will be recording.

Also, I pressed the red Record button and it displays that the recording is complete.

I’m not sure how to control the start/stop of the recording and if I can do that with keystrokes? Crtl/S to start? Crtl/E to stop?

Thank you so much!