Learn English – Hypernym for “to increase” and “to decrease”

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I'm writing a walkthrough for a video game I really enjoy and I came to a point where there is a system that you can change the "power level" of monsters. It goes up and down, 0 – 1 – 2 – 3 – ect…

In my guide I wrote:

Increase/Decrease monster power level. I will explain more later in the guide (…)

I want (don't need to) put it into 1 word. It might be really simple and I just need some rest to get my mind functioning. If you could help, That'd be nice!

Best Answer

What about:

regulate the monster's power?

(M-W): to set or adjust the amount, degree, or rate of (something)