Hi Mike,
ports 24 and 16 change port mode from access to trunk.
go to VLAN management > create vlan (add VLAN 20)
then VLAN management > Port settings > (select port 24 on 2024 and 16 on 2016) change access mode to trunk
Then go to VLAN management > Port to VLAN > (select VLAN 20 form drop down field)
srw2024 radio buttons port 17 select untagged port 24 tagged
srw2016 radio buttons port 7 select untagged port 16 tagged
thanks
Razmik Mampourian