The D-Beam has some pretty useless options, IMO!
Is yours not working, or is it that you just can't think of anything useful for it?
My preferences for it are Chimes, on the SFX button, and ACC On-Off for CTRL (you can program what you want on each button, per UPG).
It makes for a very easy drop to just Bass and Drums for a section, and partly returns the Orchestrator feature much missed from the VA series. That also had "Small Combo' as an intermediary set in between Bass & Drums and Full Ensemble, but at least this is something!
I'll also use the D-Beam for Leslie F/S if I don't have my FC-7 with me...
BTW, are you guys regulars at Roland-Arranger.com? I'm afraid I don't drop in here too often, but I'm at that site on a daily basis, and can help in a more timely fashion, there...