Assigning a key for a specified action in a configuration file is done by mapping a keycode corresponding to the keyboard key you want to use.
The list of key codes can be found here.
If you want for instance to assign Backspace to an action you need to use the value 14
Below, you will find the list of all basic actions that need to be setup outside of the default game controls menu.
The setup can be done either in a configuration file (using the codes mentionned above), via MCM menu or both.
Power attack key can be setup in the One Click Power Attack MCM Menu.
Dodge key can be setup in the TK Dodge RE - Nolvus Settings mod. (42 being Left Shift)
Block key can be setup in the Dual Wield Parrying mod.
AND
The same key Valhalla Combat MCM Menu.
You need to set THE SAME KEY IN BOTH MOD!!!
Wheeler key can be setup in the Wheeler - Nolvus Settings mod.
Stances key can be setup in the Stances - Dynamic Animation Sets - Nolvus Settings mod.
Compass key can be setup in the Toggle Compass Hotkey MCM Menu.
Quick Light key can be setup in the Quick Light MCM Menu.
Ashes of War attack key can be setup in the Ashes of War MCM Menu.
Equipment durability key can be setup in the Equipment Durability System NG - Angelic Preset mod if you are using a 16:9 or 21:9 monitor ratio.
If you are using a 32:9 monitor ratio, double click on the mod Equipment Durability NG - 32x9