Click on Switcher in the rcmd menu
Scroll to the bottom and click on Try experimental window switching
Install Hammerspoon
Install the rcmd script
Screenshot: https://lowtechguys.com/static/img/rcmd-window-experimental....After that, you should be able to press Right Option + Equals ralt-= to assign a key and an action to the currently focused app: https://files.lowtechguys.com/rcmd-window-actions.png
If assigning doesn't do anything, try restarting both Hammerspoon and rcmd, there can be a race condition when the script is installed the first time.