...
To enter your data (source) click the “+” signs of the fields you want to add.
How to Add External Information and Notes
...
There is no one and universal way of upgrading record status in the ISNI Web Portal (as is in WinIBW client); results may vary from one case to another and depend on a type of a name, information about the name in the ISNI database, an initial source of record, and on the software algorithm. Sometimes all it takes is adding your source or website information to the record. In all unsuccessful cases you have an option of upgrading record in WinIBW client (see Modifying ISNI records in WinIBW Client).
For more on Modifying records visit: ISNI tutorial videos:
Enhancing ISNI records, part 1
...