Hi,
I'm having exactly the same issue here but I'm very new to Mitel and the help provided isn't too clear to me I'm afraid.
Would it be possible to advise where I need to add the 2nd Multicall key? It may be that we have different systems (using Softphones).
Basically, when making / receiving a call, we do not have the transfer button in the MiCollab Client.
Any help would be greatly appreciated.