A booking can be bookmarked to assist the user to remember that a action still needs to be done on that booking. The bookmarks are almost like tasks. The booking will be a bookmark and when the action/task has been completed the bookmark can be removed.
Web App:
Shortcut default: N/A
Roadmap: N/A
User manual link: N/A
Desktop App:
Shortcut: (Bookmark) Shift + Ctrl + B (Shift, Ctrl and B buttons together on the keyboard) to insert a bookmark
Roadmap 1: Mod Diary > RC Other options > Insert Bookmark > Bookmark