Progressing timeline to specific frame

Hello,

I'm using Timeline in a live performance piece and am trying to write a script that allows me to jump to specific frames in the timeline following a key press. I have a timeline set up with multiple clips and I need to play them in a sequential order but need to manually trigger the start of each clip. So while Clip 1 is playing, if the spacebar is pressed the timeline will jump to the beginning of Clip 2 and so forth. I'm very new to unity so any help would be much appreciated. Ive attached a picture of my timeline set up below. Thanks!