INSTALL INSTRUCTIONS:

IN "D:\The Witcher 3 Wild Hunt\bin\config\r4game\user_config_matrix\pc" OPEN THE INPUT FILE. 
NOW ADD THIS UNDER THE FIRST "<VISIBLE VARS>": 

<!-- Wolf Companion - Begin -->
<Var builder="Input" id="callWolf" displayName="wolfcomp_call" displayType="INPUTPC" actions="CallWolf"/>
<!-- Wolf Companion - End -->

IT SHOULD LOOK LIKE THIS : 

<UserConfig>
	<Group builder="Input" id="PCInput" displayName="controls_pc" tags="keybinds">
		<VisibleVars>
			<!-- Wolf Companion - Begin -->
                        <Var builder="Input" id="callWolf" displayName="wolfcomp_call" displayType="INPUTPC" actions="CallWolf"/>
                        <!-- Wolf Companion - End -->
						
If you want to install it without breaking your game, edit the "KEYBINDS" file with the keybindins you want.
In my case is: IK_NumPad3=(Action=CallWolf), then copy and paste it everywhere you want in the input file in E:\Documentos\The Witcher 3. 
([Combat] [Exploration][Swimming],etc... Save and exit.						

Then copy the folders from the mod to their respective paths.

Example:
modWolfCompanionFixedDamageScalingLvl folder to mods folder,dlcwolfie folder to DLC folder and obviously the Bin folder to Bin folder.
Use Script Merger for prevent conflicts (there will be a lot if you use so many mods as me but the script merger will fix it all without any problem).