How to amend custom fields dropdown menus

how can I add new items to lists on dropdown menus inside enquries - custom fields?

If you go under Admin - Settings, then click ‘go’ next to the drop down field that says ‘contacts’ that will take you to the custom fields editing section.

Then, click the ‘edit’ button next to the custom field you wish to edit and the list of items will show at the top of the page. Input/edit your options there and click ‘save’ and your drop down list items will be edited.

Hope that helps.