Click on "Venues" in the left menu bar.
Click on "+Add Venue".
Search for an existing venue by filling out the fields and clicking the check button. If you do not see the venue, click "+Create New Venue". Fill out the information and click "+Create New Venue" at the bottom of the page. There will be one more check to ensure that duplicate venues are not being created. If the venue still does not appear, click 'Create New Venue".
Repeat step one and select the new venue you have created.
Click on the "Fields" tab and then click the "New Field" button.
Fill out the field information and then click "Save".