Once one has a coordination queue manager in the "Managed File Transfer" folder of the IBM MQ Explorer (with the FTE add-on of course), how is it that one adds additional Coordination Queue managers? I don't see an "Add Coordiation Qmgr" option from the Managed File Transfer folder ... ?
And so following the resolution of a PMR, we find that my implementation of the FTE plugin for MQ explorer at v 7.0.1.2, was such that it precluded the detection of additional coordination queue managers. I deployed the v7.5 version, and EVERYTHING works fine now. Case closed.