Dell PowerConnect 8024 User Configuration Manual page 714

Figure 25-16. MLD Snooping Table
2 Select the Edit checkbox for each Port, LAG, or VLAN to modify.
3 Edit the MLD Snooping fields as needed.
4 Click Apply.
The MLD Snooping settings are modified, and the device is updated.
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Configuring L2 Multicast Features