Post Process Timeline?

Hello, I am currently creating an RTS caveman tribe survival game and I want to be able to make a timeline that will make three different post process volumes switch out with each other at different times to give the affect of different lighting at different times of the day, day, evening, night, etc. I have the three post processes switching with a key press, but I want to be able to give the same seamless affect over a period of time.

I also need to know how to make a light that only makes shadows and doesn’t like the level itself. But the timeline post process is the main problem here. I also want to make a fog of war affect as well.

Any ideas?

You can use a Timeline to set the blend weights gradually increasing weights from 0 (no effect) to 1 (full effect) over a period of time.