problems with the key frames and pegs.

Hello I’m new to toon boom, I have a trial version of essentials, I’m getting really in to it but am having problems with the key frames and pegs.
I followed a tutorial by Adam Phillips from animator 2 and every thing was going well I followed the tutorial step by step and coped every thing. my problem is, when I select the peg layer to animate and then select the first key frame, then I drag the red bar across to the last key frame I want to finish the movement with, the movement does not work and no arrow appears on the time line. please I really need help.

Thank you.