Reviewing queued add-ons is a collaborative process that involves:
Ad-on author: the author is responsible for documenting changes and making sure the download link is working properly.
Reviewer: the reviewer is reponsible for checking to make sure the download link is working and manifest information is consistent with what the add-on author has provided and NV Access's add-on release policy.
NV Access: to make sure the add-on info is consistent and merging the data for an add-on that was approved by a reviewer.