how can I limited speed for all user just one user unlimited speed for download and upload

Hi
I use rb750
Local ip = 192.168.10.0/24
Wan1=192.168.1.1/24
Wan2=192.168.2.1/24
I limited speed for som file with layer7 protocols,mangle,Queue Tree

Layer 7:
Name=download regexp=^.get.+.(exe|rar|iso|zip|7zip|flv|mkv|avi|mp4|3gp|rmvb|mp3|img|dat|mov|apk).$

Mangle:
chain=prerouting action=mark-packet new-packet-mark=All passthrough=yes src-address=192.168.10.0/24 log=no
log-prefix=“”

chain=prerouting action=mark-packet new-packet-mark=FileEx-Pak passthrough=no layer7-protocol=download log=no
log-prefix=“”

Queue Tree
name=“All” parent=global packet-mark=All limit-at=0 queue=default priority=1 max-limit=100M burst-limit=0
burst-threshold=0 burst-time=0s

name=“fileex” parent=All packet-mark=FileEx-Pak limit-at=32k queue=default priority=8 max-limit=64k
burst-limit=120k burst-threshold=80k burst-time=2s

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It’s work perfect and I limited speed for files with extensions in layer 7
But I want other method for unlimited speed download file for a user with mac 4a:5d:dd:……. I create a mangle rule like
: chain=prerouting action=mark-packet new-packet-mark=MAC1 passthrough=yes
src-mac-address=AC:F1:DF:11:6C:D4 log=no log-prefix="
and add in queue tree :
name=“Mac” parent=All packet-mark=MAC1 limit-at=0 queue=default priority=8
max-limit=10M burst-limit=0 burst-threshold=0 burst-time=0s

but not work ???
how can I limited speed for all user just one user unlimited speed for download and upload