This was discussed maybe a hundred times already in the forum! A little search would have brought you back several ways to do this with many alternatives !!! There's even a vMix tutorial in the YT channel dedicated to this topic !

So yes, it's common in the vMix world !

You can either go for :
- a midi controller. There are several options. I personally use the Akai APC Mini ($70) and the Behringer X-Touch
- a software controller like vMix UTC or vMix Panel Builder which let you design your own remote "virtual" mixer. It's free.
- other solutions for tablets are available as apps for iOS and Android

Here's my own remote mixer for vMix using Panel Builder
DWAM-Virtual-Mixer.jpg (1,733kb) downloaded 66 time(s).

and an old video I did for the use of the Akai midi controller


Hope this helps and remember to search the forum before asking questions: 90%-95% of the answers you're looking for are already there !

DWAM: Wow, that's a gorgeous audio panel you built in vMix Panel Builder! I just made my rudimentary version as a proof of concept, and it worked spectacularly. I can see I have much room for improvement. I would like to use the image of your panel as reference, if you don't mind.

Thanks for sharing, and for being such a helpful presence on the forums.

Best,

C*

Half the fun is learning how it all works. Seeing your panel is inspiring, and gives me ideas to fix the things in mine that I'm not completely happy with. :-)