I am looking to join a research MSc this fall and one particular supervisor asked me if I would like to join his lab and I said yes. I though forgot to ask him what to do next. Do I contact the program and tell them that this supervisor has asked me if I would like to join his lab or wait for him to contact the program, do the needful and then contact me if accepted? Would it be alright if I send him a mail asking him if I should contact the program informing them that he had asked me if I could join his lab? Please advise.