In Operating System, we have concept of multilevel paging. I understand it, but what I don’t quite get is until when we keep doing paging? I saw some articles which say keep applying paging on page table until we can fit it in one frame (of RAM). Is this true?

i have a task where i don’t understand the memory management of 2 processes by an OS using paging. As scheduling method i used round robin since they both perform I/O. There are 2 assumptions that need to be taken care of: