Page to select VLAN assignment for a specific port / multiple ports at once

someone

I am new to Zyxel Switches, but I noticed that there seems to be no option to assign / unassign membership to different VLANs efficiently for a specific port or a pre-selected set of ports.
I have to edit each VLAN in VLAN Setup, scrolling to the port number (it's not even showing the names) and change its assignment.

If i want to quickly select which VLAN a (trunk-) port should be capable of handling, this seems very cumbersome.