You can review items that were submitted via the Online Donation form and edit/move them into the catalog if desired.
To View Pending Donations:
Go to Catalog > Manage > Pending Items
To View the Submitted Donation Forms:
To Manage a Pending Donation:
Note: Accepting the donation will create a new donor record with the info provided on the online form. If the donor already existed, you may need to merge the duplicate user records for the donor.