[SOLVED] Resources are not prioritized

Hi,

My resources are not prioritized for some tasks, for example, a recourse has 30 h work on Task A with priority 400, and another task B with priority 600 which is a very project and takes months to finish. When I do the planning he will start Task A for one day then do Task B, then after that finish Task A.

It's very frustrating, I don't know what I did wrong and where I can check to do the adjustments.

Thanks in advance!

OK. That's why, thanks!