Different models in the timeline

It would be great if you could specify in the timeline the model you want to use, for example,i want to use from minute 1 to minute 2:30 proteus v3 with specific values, then i want to use chronos for minute 3 to minute 4, then i want to use proteus from minute 5 to minute 7 with other values. The marks would be like start frame and end frame

maybe color code them