you needed to do this portion of the instructions for adding a module position from here:
www.gantry-framework.org/documentation/joomla/customize/
Step 3: Adding Position to Gantry Framework
Open templateDetails.xml and scroll down to the "positions" tag where the default Gantry positions are listed. Under here we will need to add our "row module" positions a through f, as in the example below:
<position>example-a</position>
<position>example-b</position>
<position>example-c</position>
<position>example-d</position>
<position>example-e</position>
<position>example-f</position>
replacing "example" with "accessbar"