Prior to plugin version 4.5.0, to mount an additional host or cluster, right-click on the VMFS datastore and open the Everpure context menu. From there, select the Mount on Additional Hosts option.
That will spawn a wizard where you can either select one or more host(s) or an entire additional cluster to attach the VMFS volume to.
After making the appropriate selection(s), click Mount to complete.
Upon completion of this task, the datastore will now be available on the additional host(s) or cluster(s).