The first release of the Everpure Plugin for the vSphere Client that supports ActiveDR is version 4.4.0. To install the plugin, refer to the following KB article:
HTML-5 vSphere Web Client Plugin Support
The vSphere Plugin currently only supports creating new volumes in ActiveDR pods (scenario #1 above) and does not offer the ability to create/delete replica links. This must be done directly via the FlashArray GUI, CLI, or REST API.