You can create as many links as you like to every project. You can link a project to contacts, tasks, other projects, appointments, documents, knowledge entries, bookmarks and forums. Set the link by opening the detail view of a project under the Links tab. All existing links for this entry are listed here in table form. You can create a link to the project entry via the button activate link mode. Finally, switch to the detail view of the object to be linked and also select the Links tab. There, all you have to do is click the Create button and the link is created. Finally, to leave the linking mode, click on the button End mode.