Is it just for the RE status?

For example, are you experienced in social media marketing?

A more general observation on this topic, intended for you and any future readers - find out from the agency that has control over this area exactly what it takes to LOSE grandfathered status.

Here is what J Scott had to offer on Zuck's quaint alternative social media site. 

You do need to disclose the lead status when you sell it though.

Hi Matthew, start with any free resources we have like social media etc. follow industry leaders and maybe you might interested in my book happy rich and healthy book not just for real estate but also start building wealth without sacrificing your health.

I would do the following, at a minimum:-request that he complete your rental application (hopefully you have a thorough application),-request identification documents (government-issued),-require that he provide you with proof of his visa status and the authorized length of stay,-verify his employment, income, and financial stability, and-contact his previous landlords for references.If he cannot satisfy these application requirements, do not approve.

@Kee Lee  since you said they were older it may be possible that someone became eligible for social security resulting in the change.  

One individual needs to make the final decisions.Dispute Resolution: Define and agree on a method for resolving disputes that may arise, such as mediation or arbitration, to avoid litigation.Change in Marital Status: What happens to the ownership if a party gets married or divorced?

@Daniel BaradRecommend 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.