Presenting two movies, but play sequentially

Hi everyone,

I’m a beginner in psychopy and I’m trying to make a sentence comprehension experiment. Participants will first hear a sentence and then see a fixation cross. After the fixation cross they will see two short movie clips. I want them to be on the screen together, and the left movie has to start playing first, and after it ends, the second movie clip (on the right) has to start. So my question is: how can I present two movies simultaneously, but play them one after the other?
After the last movie ends, the button press (left or right key) will become available.

Thank you for your help!