Additional tenants to lease

[Allen Collier]

I need your help again, you all have been great so far! So I have tenants that haven’t signed a lease yet, but intend to in order to move in June 15. Three people who are friends, for a 3 bedroom house. Now they have asked to include an additional 2 people for a period of 4 months; the 2 will move out in October. How do I handle the lease, the security deposit and any additional rents. We have a verbal agreement that the lease will be $750/month, plus $25/month for a pet (dog), and security deposit of $775, plus a $300 pet fee. Thanks for your help!