Video helped a lot. Ive updated to latest firmware on all modules and M-600. When I go to assistant 2 under m-600, I click on tab to check the distance settings between the antennas and the link is not active. My mouse arrow turns into a halt sign. Help please

I ran into this issue as well.  Here's what I had to do, go to the devices tab where you ,cannot enter the value, don't select any other screen.  Unplug USB, and plug it back in.  As soon as it's plugged in it enables the spacing entries.

Coppedhead, did you check wether your settings change is persistent? I've read elsewhere in the forum that the latest firmware 1.0.0.18 is "not" compatible with the M600 and everything works if you revert to the previous 1.0.0.17.

Copperhead, I can confirm that following your procedure to enter the greyed-out information does work to get the information saved but with RTK firmware version 1.0.0.18, there is a definite problem using the version with the M600. You will have to revert to 1.0.0.17 to use RTK on the M600 until DJI release a new firmware version