This video displays how to create a bookmark from the Explore tab in FTK. It uses the naming convention that should be used for ERs.
Highlight a range of files by selecting the first file, holding down shift, and selecting the last file.
Right Click. Select Create Bookmark.
Type Bookmark name in top left box. ER[space]number: Name, dates
Select Shared under Select Parent Bookmark. The bookmark will appear under Shared.
Select Bookmarks tab. The bookmark appears under Shared, the selected parent bookmark.