How do I change the preview window size in the Sequencer while rendering?

I can’t seem to figure out how to change the preview window when rendering in the sequencer. When I’m rendering, it only shows the top left corner/maybe it’s the middle left but it’s very difficult to see what’s going on and I’m unable to properly identify if there’s any issues. Is there any way I could change this?

(Attached is how small the preview window is. Contents are test.)

Thank you so much.

Unfortunately you can’t. Take a look at this thread here:

That’s unfortunate, but thank you for the response.