I am new to Firefox, and have just discovered that in order to open a new private window I must use the Ctrl + Shift + P keyboard shortcut which is pretty much impossible to accomplish with one hand. I tried to use this extension: https://addons.mozilla.org/en-US/firefox/addon/shortkeys/ But sadly my new added shortcuts were not opening the new private window while the ctrl + shift + p still worked, and it appears that this extension is only able to add new shortcuts and not change nor delete the existing ones. I want to assign a comfortable keyboard shortcut for opening a we private window (optionally unassign the Ctrl + Shift + N from Undo close window and assign that keyboard to open a new private window).