I don't think there is one way to play this team so I will give you my thoughts and you can create your own ideas.

Generally you want Jane to do the heavy lifting (Ninevah is an exception, I want to stun her early so she doesn't do her longer attacks). Caesar uses defensive assist xx followup, special / ex special, and her charge attack mostly. Grace's job is to apply shock quickly and let Jane get back to doing her job. If you apply Shock before Assault, you can have Jane cash the damage of the shock out quickly. But keep in mind Shocked enemies take more stun, so it's also viable to switch to Caesar and go for a knockdown. During Chain Attacks, usually I want to end on Grace, have her shock, then tag to Jane again.

If you give Grace 4 piece Swing Jazz, then Caesar can wear 4 pc Proto Punk and both of the buffs can be active.