The table that takes up most of this page shows the structure of the selected table in your database. Each row details one field in the table, with the name, data type and other options shown.

At the bottom-left is a button for adding a new field to the table. Before clicking it, you must select the type of field to add - see the PostgreSQL documentation for more information on field types. Also at the bottom are buttons for viewing all data in the table and dropping the entire table and all data in it.