This window appears when you choose a row on the Multicast Router Ports tab of the IGMP Snooping window and click Modify. Use it to change the multicast router ports that are assigned to a VLAN.
To add a multicast router port, select it from the Available Ports list and click Add. The port moves to the Router Ports list.
To remove a multicast router port and return it to the Available Ports list, select it from the Router Ports list and click Remove.
Tip: To select more than one port, press Shift and click the ports you want.
Click OK to save your changes and return to the IGMP snooping window.