Is there any way to change my viewport size in the event sheet?

Is there any way to change my viewport size in the event sheet?

choose a viewport size at start-up. 320 by 180 for example. Put a 64 x 64 sprite in the center, add below to the your event sheet. Run

You can change the canvas size in system events.

Keyboard > On Space pressed

System > Set canvas size to 100 x 100

run the preview.