Peak compressor how to

I got a school project where they say i need to set the compressor to peak and not rms. Anyone knows how to do that in reacomp and if its possible? Stupid question perhaps but im a rookie

Just set the bottom slider labelled "RMS size" to zero...it defaults to 5 ms :)

Attack should not be bigger than Rms.. I'd say 0-2ms for both

In my school project they say i need to use "hard knee" and put make up gain on 0db. I cant find a make up gain anywhere, do they mean the "wet" output? And the hard knee, is just putting a big number on knee size?

thanks you!