I think you could do this using special "Tuesday" clocks.
If you made a track group called "twofor" and each week put all the tracks from your artist into that group then scheduled two tracks from "twofor" in each hour that would be a start.
You will also need to have a playout policy to avoid playing the same track within a few hours but I think this will be close to what you want.
It's a bit "manual" and relies on moving tracks into groups but try this.
More generally, the whole "clocks" scheduling model is very powerful.
I have a classic rock station and I want to air 2 songs by the same artist all day every Tuesday. How do I do that?