You must set one of the remote controls to another remote control code.
By default you have both remotes with 0002 code ... you can set the remote control of zero per example as ( 0003 ).
1) Turn off the UNO4k ...
2) Set the remote control of ZERO to 0003, by:
1. Press 2 and 7 for three seconds until LED is on.
2. Press HELP
3. Press <0003>
After 3 blinks the RCU should be setted to code 0003.
Use now the UNO4K remote control and under plugins ... change the "remote control code" ... from 2 to 3...
After set it to 3 ... save this setting by using the "zero remote control to keep this settengs".
Now you should have one command to control UNO4K and other to control ZERO separately.
best regards
nunigaia