I separated "Leads Mapping" and "Contact Mapping" into two different pages to prevent errors: Salesforce has two objects that can represent “people” and whichever one you use in SFDC will affect what you need to set up in Apollo. So by separating the mapping out by object we hoped to let users know they don’t HAVE to set up both just because both are on the screen, just the ones that are relevant to them. This was a major problem with the previous iteration of Apollo's setup process, people would setup both "people" objects and end up committing an error called "double mapping" that customer support always had to troubleshoot out with users.