Can I make a specific window within an application fullscreen?

I'm surprised I can't do this with the 'Custom Move/Resize Window' command.

I need to specify the name of the window to make fullscreen. Can I do this or is there a workaround?


There is a predefined action called "Enter Fullscreen (If Supported)"

If necessary you can combine this with the "Activate Specific Window" action, otherwise it will just fullscreen the focused window

Perfect- this has solved my problem! Thank you!!