Before Editing, notice that the dialog under Facilities offers several options to make the selection process easier:
Now, under the Facilities tab, click on the Add button if you want to add a new Facility, or click on an existing Facility to edit the corresponding information.
When the Facility Dialog appears:
If you create a new Facility, this will be added in the Facilities list. Remember that you can always delete a Facility by clicking the bin icon in the Actions column and navigate the list pages with the aid of the corresponding buttons located below.