To help you organize your entries in related groups, you can assign tags to events, to-dos and journal entries. If you assign tags, you can use them later when searching, filtering, and displaying events and to-dos.

To assign tags when editing or creating new events or to-dos, click the ... button in the General tab. You can assign more than one tag to each item.

To create and delete tags, choose the Settings → Manage Tags... menu item to open the Manage Tags dialog. If you assign different colors to tags, you will be able to quickly identify the type of event by its color, either in the Agenda view or in the Month view (depending on the KOrganizer view configuration).