How to increase layer duration in Photoshop Video?

I create a new shape layer in order to make a clipping mask for my video but the newly created layer lasts only 5seconds compared to the 16 seconds of my video and I can't seem to find a way to extend the duration of this layer, is there a way to do it ?

I would like to pull that to the right like the red arrow is showing but I can't it doesn't do anything