We manage VMix with three operators in a high school environment.

L-R
TD - MIDI operator responsible for switching the show live
"Red" input operator - responsible for importing new pre-produced videos, photos and other inputs during pre-show
Graphics operator - updates titles and PNG proxy graphic files on a server watched by VMix

It would be helpful if our external Graphics operator could change the Input name for each lowerthird to match the content they enter for actual display through the web controller. Currently, that requires additional work on the part of our "Red" operator. We have a bottleneck at "Red" so taking some work away from that person is important.