The options in the drop down menu vary based on whether you access this menu from the Catalog tab, the My Audience tab, or the Active tab.
Cortex Catalog - Catalog Tab example (drop down menu selected)
Each tab drop down menu has options from the following list:
Select the drop down menu in the lower right of the card to Activate a channel or to Activate Additional Channels.
Select the drop down menu in the lower right of the card to Add to Activation Group.
Select the drop down menu in the lower right of the card to Add to Combine Audience.
Select the drop down menu in the lower right of the card to Edit this Audience. See 10. Edit this Audience for more information on editing or updating the audience names or audience descriptions for combined audiences that you have created.
Select the drop down menu in the lower right of the card to Hide / Unhide an audience. See 5.4.3. Show for more information on toggling between the Show options of Visible, Hidden, and All.
Select the drop down menu in the lower right of the card to Deactivate an active audience. See 7. Deactivate an Audience for more information on menu-enabled behavior.