Cheng, do VMware support people browse these boards? Or is it all users supporting users? I'd file a ticket with VMware support but my org does not allow that and makes me go through system engineers who mostly focus on the iOS side of WSONE
I've come across many great folks from VMware on this board, but most are just customers like you and me.
I used to focus on the iOS side only but as we all know you can't ignore Android and now Windows and other platforms as well or any endpoints for that matter.
One way we solved this was to disable the other options so the user didn't have a choice... So use App Control to blacklist the apps we didn't want people to use. That would (in a round-about way) accomplish the request presented. However, it would mean that there could only be one choice, which might not satisfy every company's need...