Your address book helps you when selecting persons for invitation to workspaces, appointments and votings: the diverse action forms offer the option ‘Select from my address book’ for this purpose.
You can sort the contacts of your address book according to various criteria using View Sort . When sorting by type, the contact lists precede the contacts in the order: general contacts, user contacts and pending e-mail contacts. The contacts of your address book may be filtered according to category and organization using View Filter (also see 3.8.4 Views on folders)
You may contact persons represented by the contacts of your address book, when e-mail addresses, mobile phone numbers or other contact data are given. This works as in normal contact lists and is described in 5.1.6 Contacting contacts.