My hope is I can gain their trust as a property manager and eventually be the one they turn to to sell later on or refer for business in the future.

Avoiding the occupants from squatting is best addressed with background checks, employment verifications, and references before signing the lease.

For the last point, it's referring to a window egress.

Also:_________________________________________________________________________Recommend exploring as many sources as possible to get referrals AND cross-reference them to get as much accurate information as possible.Check out NARPM.com, BP’s Property Manager Finder (BiggerPockets: The Real Estate Investing Social Network), etc.Also, encourage you to learn from the mistakes of others - by reading posts here on BiggerPockets about owners not having their expectations met by their current Property Management Company.

They often refer to it as 'certainty of close' when reviewing offers.3.

I checked the Better Business Bureau for complaints, I checked the NJ State Attorney General consumer division to ensure he was licensed, I checked every reference he gave by visiting sites and speaking with the homeowners. 

Please be skeptical before spending your hard earned money on programs and ask for a many references.  

This not only refers to lay people; attorneys also can invest with no research.  

@Elias Halvorson the poster actually lives in another country.The pinned Cleveland, OH reference is just what they entered based upon this post:)

For references from actual insurance companies:https://www.progressive.com/answers/interested-party-renters...https://www.lemonade.com/renters/explained/interested-party/...https://www.travelers.com/renters-insurance/faqs