When will I be in Mutuelle?

I am of those who need a 6 month waiting period before I will be covered by Mutuelle. I arrived and started working 6 months ago, and have just finished a work contract after 5 months.

What do I need to be covered after the 6 months?
(I could have friends pay me some salary, so it is important to know exactly what I need).
I had the impression from Partena that when i came back I just need to show I am working - I think recent pay slips will do, and that its not really a question of having worked for 6 months.