hey guys

I am trying to get DGCFAD tuning to play decrepit birth-living doorway, but I can't figure out my new tuner!

I've never used this kind of tuner before, so how do I go about tuning this?

Tuning range is 7b, 6e, 5a, 4d, 3g, 2b, 1e.. so how do I go about trying to get DGCFAD? so far I got the D and G.. -.-