hi,
if you read the manual section http://www.mikrotik.com/docs/ros/2.9/root/queue.content#6.54.6.3
you will find at the end the pcq example.
in details when queue is created
Finally, make a queue tree for download traffic:
/queue tree add name=Download parent=Local max-limit=10240000
/queue tree add parent=Download queue=pcq-download packet-mark=users
And for upload traffic:/queue tree add name=Upload parent=Public max-limit=2048000
/queue tree add parent=Upload queue=pcq-upload packet-mark=users
the parent interface is Local for download and Public for the Upload.
This is true when you have identified the local port and out port.
But when you have a PPOE the MK create new PPOE interface for each client. In this case what Queue I must generate? I cannot image that I need to insert one rule per client, because it is much more complex with 200 users.
Max