Is there any way to have one optional field allow for multiple values.
Ie an optional field in A/R Customers named 'additionalPhoneNumber' and for the customer we could have multiple 'additionalPhoneNumber' defined.
Unfortunately, no. You could create multiple optional fields 'ADDPHONE1', 'ADDPHONE2', and so on.
Or better yet, use Multiple Contacts.
SYSTRONICS Field Extender allows to have multiple optional field values for the same optional field without any restriction.
*Community Hub is the new name for Sage City