Hi Dan
Personal settings for the D4 are on pp 44-46 of the user's manual. P0 and 50% RGBM are the most liberal settings. P0 and 100% RGBM are the default settings. I have no idea how much reducing the RGBM changes the NDLs, may help most with repetitive dives. If you try it, let us all know how it works.
The D5, Eon Core and Eon Steel run different RGBM algorithm versions, Fused RGBM or Fused RGBM 2. These computers can be set more liberally, generally equivalent to a GF high of about 95 or DSAT. 0 is the default setting, -2 is most liberal, +2 is most conservative.