Wholesaling House Still Occupied by Homeowner

[Luke Paul]

Hello, I'm a little confused in the area of marketing to another investor when you get a contract signed with a homeowner. If an investor wants to do a walk through of the house, how can I let them do that if the house is still occupied by the owner? I have a section in the contract that allows access to the property. But do I need to have them give me and others access to the property as soon as the seller signs the contract? That way I have time to effectively market the property and allow investors a walk through? Thanks so much!! Luke