[Gabi]

You can set on your skills the "Previous Skill ID" setting in order to create a rotation.
Let's say you have 3 skills, skill 1 with id 1, skill 2 with id 2 and skill 3 with id 3 (you can see your skills id when you click them in skill manager). You want your rotation to be 3-1-2 (let's make it a little random). Then you should do the following:

• move skill 3 last (using up/down)
  
• put skill 2 first, and skill 1 second
  
• on skill 1, put Previous Skill ID 3
  
• on skill 2, Previous Skill ID 1
  

How it works:

• skill manager checks indeed available skill at a moment from top to bottom, so ...
  
• skill 2 (previous 1, not casted, skip) -> skill 1 (previous 3, not casted, skip) -> skill 3 (no restrictions, cast)
  
• skill 2 (previous 1, not casted, skip) -> skill 1 (previous 3, was casted, cast)
  
• skill 2 (previous 1, casted, cast)
  

So you have your rotation.