Fast App Switching from Roon to the vMSR application

What do I have to do in the Roon settings to integrate vMSR and where on the Roon iPad screen is the button can I switch to vMSR?

I have already made the vMSR app setting Roon:// in iOS.

Also is it possible (as with Sooloos) to autostart the M-system when I play music from Roon?

Thanks for help

A1 It is not supported by Roon but has been [requested]
(Fast app switching to vMSR (iOS)).

A2 This is supported by Roon with Meridian endpoints.

See also this post.