First of all I apologize if my question is hard to understand, I'm not familiar with Backgammon glossary.
Let's say you rolled 3 and 6. In a certain situation the only way to play both 3 and 6 is to play them from one of your checkers from which you have to play 3 then 6 (6 is initially blocked). Now my question is are you allowed to play 3 from another checker into a position where you can't play 6 from any position anymore? And if there's a rule regarding this, can you please tell me what is it called?