You're the editor-in-chief
Can I (as a editor-in-chief) hide certain photos from other editors?
No, as a chief editor you cannot hide photos. The entire editing team can view and use all the photos in the magazine they are editing.
A communal photo folder is used. The photos that have been uploaded can be used on every page.
If you don’t want to display certain photos, you can create a second magazine and upload these photos to the second magazine. Then you will be able to select the photos from this photo folder without your editing team being able to see them.