Project Intake

I am extremely new to Smartsheet, but my company is in desperate need of project management software. I think I can really figure it out once I get my feet wet, but I am not understanding where to put the information in to set the project up. It's the intake information. PO numbers, Scope of work, etc., but when I go to the actual intake sheet it references another sheet that I can't locate in the set so it seems like I am missing something.