The easiest way to creaye dtCrowd

Hi everybody, I’m trying yo use Recast/Detour module in my project in irder to use its dtCrowd class. At first i need to create dtNavMesh for it, but I hven’t found any ways to do it easily from my existig navMesh (created by NavMeshBoundsVolume). Does anybody know any ways to imporn existing navMesh and then convert it to dtNavMesh or any UE4 projects which uses that classes so I could use them as examples?