"Addendum" means an additional piece of information or an added document that supplements or updates something that has already been written or said. Full definition
In addition to the guidelines referenced herein, additional minimum guidelines for RTF programs are included in Addendum 2. (aspca.org)
However, there are other important contingencies your agent should consider adding to the contract as addendums: (ourvalleyhomes.net)
Sections within a CV can include published books, presentations, awards, and teaching experience along with addenda of sample journal articles, research work, and other relevant contributions. (thecareerexperts.com)