@ pesi

AFAIK, there is no 'Global' way to do this (i.e. automatic regardless of Input), but you can accomplish the effect with "Shortcuts" for specific Inputs.

On the other hand, I would be inclined to do things a little differently if I understand you correctly.
More specifically, I would use the 'MultiView' Feature.
Can you elaborate more on your set-up and how you need or want to use the PiP effect?


Ice

@ pesi

This is why I would use the MultiView feature (if you have this capacity, i.e. vMixSD and above).
There are several options depending on the overall look you actually want (I would opt for a Background with 2 PiP screens, but that's me).
For your particular description (PowerPoint fullscreen with PiP on either left or right), I would:
1. make two "Virtual Copies" of your PowerPoint Input (right click cog wheel)
2. rename them ('PiP Right' and 'PiP Left' for example)
3. open the Multiview feature for each (cog wheel->Multiview) and position your Camera Input into Overlay 1 (size and position accordingly)
So now you have 4 Inputs, two original (PP and Camera) + two with PiP Overlays (R & L) that you can easily switch among as necessary.


Ice

@ pesi

As stated earlier, you could do it with 'Shortcuts' if you want to "keep it from getting crowded"...
You'll need to set-up 4 Shortcuts:
1. OverlayInput1
2. OverlayInput2
3. OverlayInput2Off
4. OverlayInput1Off

Apply 3 and 4 respectively to 1 and 2 in "Advanced" setting to trigger the overlay Off.

Hope that helps.


Ice