Some journals share the manuscript file and supporting files with reviewers because it is helpful for the reviewer to look at the specific manuscript in order to decide whether to accept the reviewer invitation or not. Other journals only share the manuscript title and abstract with potential reviewers and only share the manuscript file and supporting files once reviewers have accepted the review invitation.
How to change this journal configuration option
Go to My Journals > Settings > Configuration Options and scroll down to the Reviewer Options section. Check or uncheck the box next to Hide files from reviewers until they accept the review invitation and then scroll down to click the Update Journal button to save your changes.
To learn more about being an editor, check out our Editor Guide.