Where you are…

• You should already have selected a feed by now, so be ready to work on the messages assigned to it.

From here, you can…

• create a new message.
• Select,
  then edit / delete  an existing message.

Create a new message

Click on the tab Messages at the top of the right (details) panel. And, in the left (menu) panel, click the Create title bar.

Then…

• fill in the form that will be displayed, and click the Store button below the form.

Modify or delete a message

Again, click on the tab Messages at the top of the right panel. And, in the left panel, click the Show / Edit / Delete title bar.

From the list select the feed to modify or delete.

Then…

• fill in / modify the form fields, and click the Update button below the form, or
• click the Delete button below the form.