Your Device Settings are the same which I guess is good news - means Indigo should support it.
To exclude you have to press the L button.
Read the section on Z-Wave Learn Mode.
The R button is used to remove a device from the ZRC-90 when the ZRC-90 is being used as a Z-Wave Central Scene Controller..
You are wanting to use is as a Secondary Scene Controller so you shouldn't use the R button unless you want to do the factory reset..
The Reset should set it back to Factory Defaults and allow you to include it using the L button.