I have just made my dps fightclass using fightclass editor and using it on RDF / Raid but sometimes it hard to move away from boss AOE so is there any way to setup boss move freely by manually?

It could be that you set a certain range in the FC, and when you try to get out of an AOE, the bot tries to get back in range. If that's the case, try to set a very high range so you can keep control of the movements no matter how far away you are from the target.

You can disable manage character movement, then make sure your abilities you want to use without being stopped by the bot are set to In Move - true

You could also Add the Condition "Me In Move = false" setting for spells, which require you to stand still while casting and disable manage character movement in the WRotation Settings.