Swapping MB1 to function as MB2 in league?

Reverting it through windows did not work when you go in-game, I looked up a post about 2 years ago that told me to change the input.ini file by adding lines to it but that had no effect at all? Everyone in the comments said it worked but I suppose it's outdated. Any other way to swap them? I do not have a Razer mouse, I use Roccat Kiro and the Roccat Swarm program does not allow you to change them(I've sent a ticket about it to them) Thanks in advance, Aurelion Sol main.{{summoner:3}}
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