Newbie: how do I change the MFD distance range?

[Beatle1967]

I've skimmed through the documentation, can't find it. I'm use to the Collins ProLine4 with a double rotary knob that controls MFD format/range. TIA

[Pils]

39 minutes ago, Beatle1967 said:

I've skimmed through the documentation, can't find it. I'm use to the Collins ProLine4 with a double rotary knob that controls MFD format/range. TIA

It's the same on PL21, except the knob is on the PFD's control panel.