To differentiate between the leads created by partners and the leads created by its own Sales team, UMS should create lead record types and page layouts for lead distribution. A record type is a way to offer different business processes, picklist values, and page layouts to different users based on their profiles. A page layout is a way to control the layout and organization of detail and edit pages in Salesforce. By creating lead record types and page layouts, UMS can customize the fields and values that are displayed to partners and Sales team members.