Adding an action for Tellus 5 Users of the Tellus 5 can add actions to a cell on a communication grid, in order to configure certain items (volume, audio, ...) in the Tellus 5. Edit the cell (F5). Click Add item Ctrl+click=Copy item in the Actions options group. Choose Tellus 5 from the Actions drop-down list. Note: If Tellus 5 cannot be found in the list of actions, check that the add-on has been enabled. See Activating/deactivating an add-on. From the drop-down list, select one of the following actions: Headphones: on Headphones: off Speaker: on Speaker: off Microphone: on Microphone: off Brightness (25%) Brightness (50%) Brightness (75%) Brightness (100%) Click OK.