Combine Two Passives Into One

[g3n3r41dur4nd41]

I'm working on a BloodBorne Hunter class mod.

I'm trying to make custom passives,
~
Hunter's Training: The Hunters of Yharnam wield a menagerie of armaments, as well as a firearm in their offhand.
Combining: Dual Wield and Equip All

Beasthood: The Hunters of Yharnam so often devolve into the very beasts they hunt.
Combining: Evasion Up, and Bloodlust
~

I hear there is a way to combine two passives into one,
and was wondering if anyone here knows how?

 

Or knows of any mods that do,
so I can look at them for help.