I have SX200D G1005. I'm trying to set up a SS4DN as a sub-attendant. The point of the sus-attendant is to allow paged hold pickup access from programmed hold keys on the 4DN.
The manual indicates that after setting up the device type as "sub-att" that it would be advisable to program several keys as multicall buttons of the prime.
Yet, every attempt to program a multicall of the prime, gives us an error that says multicall keys are not allowed.
Help!!
Anyone with any thoughts?

Check class of service options for the SS4

Most releases of the SX200 do not allow a SubAtt to have multiple appearances of the prime. You'll probably want the buttons for either LDNs or DSS/BLF anyway.