Each housing authority (HA) provides a voucher amount determined by bedroom and some further define it by zip code or city within their covered area.

It will familiarize you with the basic terminology and benefits.

Usually I use smartlocks, but for this type of volume, I'm thinking more typical locks that have a set of codes. 

This will provide you two benefits:1) Help you better define the position, so you can hire a better matched person2) Make training the next person easier

I know what seller financing would involve in regards to me (the buyer) having to pay a interest rate set by the seller and the monthly payments also set by seller.But what are the benefits of seller financing a property?

These are professionals with additional training and a stricter code of ethics.

There are landlords who are proud to own properties while offering their communities a nice and safe place to live (and enjoying the benefits of having someone else pay for your appreciating asset).

They are usurping your property for the benefit of the public.

I want to give them the benefit of the doubt they are just struggling with staffing but now have seen some red flags that lead me to believe there might also be some type of deceit/fraud and possible financial trouble.

Code.