Since you are not able to change the Artwork Availability options, you can add your studio as a Gallery.

• login to FASO account Control Panel
• click on Artwork icon (top row)
• click on the artwork thumbnail (left column) or the word Edit (right column)
• scroll down to Gallery ID
• click on the Add New Gallery button on the right
• for Gallery Name, enter something like Your Name's Studio
• for Representation Type, select Studio
• enter additional information
• Click Add and Save Now

Go back to the artwork editing screen:

• click on Artwork icon (top row)
• click on the artwork thumbnail (left column) or the word Edit (right column)
• scroll down
• for Gallery ID, select Your Name's Studio Gallery 
• for Availability option, select Available
• Save Changes

The image will then display your studio info as a Gallery on your website.

Example:

10312017- 277194