Resizing working area on TrakEM2

hi everyone, while aligning the images from an array tomography they turned out to be sliding out of the frame, and I can’t find how to resize the frame so the stack fits in there

here’s the problem. I’m assuming this is just an option somewhere in the menus, but I’ve looked and googled and it evades me.

Thanks for your time

Hi, @meperegri!
Follow these instructions by right clicking on the canvas