PPPoE, simple queues and parent queue

Hi,
I’ve been using PPPoE with simple queues for years, but I have a limited WAN bandwidth and when the link fills up, the simple queue rate limiting seems to get out of whack. I see now there is a parent queue option and it looks like if I set up a parent queue I can set the max bandwidth available and the router will manage the simple PPPoE queues more effectively.

However, I can’t find much information about specific settings for the parent queue. Here are my questions:

  1. Should it be a simple queue? (I assume so).
  2. What is used for the target and dst fields if I want to manage all my PPPoE queues with this parent? Note, that I’m currently assigning real IP addresses from a pool to my clients, not NAT addresses.
  3. Should max limit be set to my total available bandwidth up and down? Winbox has pulldown menus for this but my bandwidth isn’t in the list - can I just enter a number?
  4. What about the advanced and total tabs? Do I need to set anything in these?

Thanks for your help!
Ryan