Balance 210 unifi HyppTV

Hi Guys,
Currently we all on MCO. need to work from home with good and stable connection. the current stock TM router is not stable. The good news is I got an extra balance 210. I cant figure out how to add a VLAN port to Unifi HyppTV which is i believe running on vlan 600 (So my kids will not disturb me). Thank you in advance really appreciate it.