From Entropy

Every class has a routine for miscellaneous DPS. Things like cooldown AAs, or discs, aa nukes, whatever you use consistently that is not a burn.

Engine 2 or 3 allow you to replace the default basic DPS routine of the class with your own design.

Anything you want to be used you will have to enter into the /miscdps slots like you would any other nuke or dot or whatever. This is going to require you to create/use all the tags to control it stacking issues, so on.