need help for routing on a interface

i have internet and youtube via vlan on my main mikrotik,
now i want to config another mikrotik with vlan,
i have succesfully transfer internet via vlan but cant config youtube,
how can i set 2nd mikrotik youtube vlan ?
how can i tell to 2nd mikrotik vlan thats youtube bandwidth ?

i am not so good at mikrotik :frowning:
and sorry for bad english