Quote - Many thanks again all the answers !

I'll check the self collision as I have not done it before.

One more question, can we have more than 1 cloth for clothify the character,

let say the rope and a scarf ( or anything ) wearing on his head  ?

Yep, you can. I do it all the time. Model the object around the original unposed robe and when you load them into Poser, do each objects simulation settings one by one but don't run the simulation. When you're all finished setting everything up, go to the top menu: Animation/Recalculate Dynamics/All Cloth. Then it will run each simulation in turn until they're all done ;).

Laurie