I have a user template which includes a "Secondary Phone" with "Derive DN" ticked.
For MiCollab client users, they can use their desktop client, via "Manage Account", to assign their choice of number against this provisioned Secondary Phone.
I have Skype for Business but not with the MiCollab plugin. If I had the MiCollab plugin, can the user use the Skype for Business desktop client to twin their mobile in a similar way? I see under "Options" and "Phones" it looks like this is where it would be done, if it can be done...?