Automatic permissiom granted from custom list

Question

Hi!

I create an event receiver exactly like this link http://www.c-sharpcorner.com/UploadFile/40e97e/create-site-automatically-when-a-list-item-is-added/

but I don't know how to grant permission on the new subsite for users listed on Team Menbers fields in Custom List "Projects"

 

Can someone help me with code please

 

Thankss