Creating/Authenticating openLDAP on Ubuntu VM, please help!?

I've created an openLDAP server (I think.) I can use other users to login to the phpldapadmin website and when i do an "ldapsearch -x" on the terminal of my machine, the users show up. However, I cannot actually use them to login to the machine. Yes, I am using the full dn as usernames. 

Also, I want others to be able to access this on their VM devices, but was not sure what to put for the URI. Do I need to put the IP in place of local host? Do I still put a port number? What would the exact format for that be? I've watched pretty much every video on youtube from the last 2 years regarding creating and authenticating on Ubuntu. I am confused in general about the authentication process, and wondering if I made mistakes. Any help is appreciated.