I have finished this new tool Ultra TC Hotkeys Editor for modifying your Total Commander hotkeys.
This program will make assignning hotkeys is very easy
it is very easy to use, no help topic needed

the only thing i want to mention here is that you can define a hotkey using keyboard instead of the mouse as follow :
1- select the command you want assign a hotkey for it.
2- Press [Control] or [Alt] or [Shift] and a [Character].
3- when you reach to desired hotkeys press [Enter].
I publish this program individual to easily update and fix any errors you can find before include it to "Ultra TC Editors" package
I hope all of you find this tool useful