re: our fields are quite unique. For example, “DUNS #” “Contract #” and “Vendor.” We also need a field for “Socioeconomic Status” and a few other things that are atypical. Would we be able to create our own fields with just the purchase of this extension, or will we have to purchase a separate extension as well?
Connections does support custom fields. You can find some advanced tutorials on how to add a text field, checkbox and checkbox group on the documentation page. As well as documentation on how to add and map custom fields that can be imported using the CSV Import extension.
These are quite advanced and require PHP development skill. I do provide custom development for Connections, if you are interested, please contact me using the Contact link at the very bottom of the page.