Set up MCS index

I need help. I want to set up the highest MCS index on my Turris omnia Router. How can i do that on SSH interface. I want to enable only the higher MCS index.

Thank you for the help

probably with iw

dev set bitrates [legacy-<2.4|5> ] [ht-mcs-<2.4|5> ] [vht-mcs-<2.4|5> <NSS:MCSx,MCSy… | NSS:MCSx-MCSy>*] [sgi-2.4|lgi-2.4] [sgi-5|lgi-5]
Sets up the specified rate masks.
Not passing any arguments would clear the existing mask (if any).