Lease agreement document

[Ryan Martin]

Had an inquiry about the topic of rental lease agreements that I was hoping I could find some answers on.

I have a rental property however for the time being it is occupied by work colleagues, and a lease agreement was never made up as this was my first property and I was trying to get people moved in. Everything (living situation) is fantastic, however I want to move into a more proper way of renting in terms of using an official lease. 

My question is, when forming a lease, is it something that needs to be drafted by a lawyer of governing body (some type of board)? or is this something like a document that I can draft up by outlining all of my terms and conditions and getting them to sign it and handing them a copy?

Some follow u questions may be:

Important information to have on there ? such as ( dates, price amounts, names, etc.) 

Is there anything I can't or shouldn't put on there?

Im going to assume a third party signer might be needed ?

How long should it be?

Thanks again, really appreciate it!