Table Geneology Question

How do I design a database that has downline visual tables that have the names of peopl as they sign up for an affiliate type of Multi Level marketing program. Like a Pyramid with all the names in the table of who is under who.

Secure access members login and Date joined etc.

I need to have it so when a name is enter a visual of a table appears with all the people that are under them, and have it scrollable to the last entry by the date joined. I have no idea where to begin, what software to use, but I do want to learn how to do this. I hope this makes sense.

Belinda