Hey!
Can someone explain how to enable some plugins for zsh in manjaro.
For example I wanna use colemak plugin. Do I need to download it or not? And where I can enable it?
That’s an Oh My Zsh plugin. It seems you’re putting the cart before the horse. You just linked to their repo, it seems you have some reading to to there. 
Oh I see.
Because there already some plugins for zsh and some p10k stuff I didn’t think about installation of ohmyzsh.