Simple: assign tracks from Logic to DM (via Firewire or other digital interface). EQ tracks in DM to suit. In fact, you might as well mix your entire Logic file in the DM, then print the stereo mix back to Logic.There's absolutely no downside and plenty of upsides in doing so.
Of course, if you're a member of the 'I Have To Print EQ and Efx Onto My Recorded Tracks School, then: assign track(s) from Logic to DM; EQ to to suit as you print the results back to fresh track(s) in Logic.
As for routing particulars, I can't help you because I'm not familiar with Logic. But others here are, and should chime in soon.
CaptDan