A Group is a collection of one or more users and/or resources. It is useful to group users and resources together since this may then reflect how your company or workgroup is structured. Groups can be hierarchical, which means that one group may contain one or more sub groups. Additionally, users and resources may belong to more than one group. As a result, the structure of your organisation can be represented by a combination of one or more groups and sub groups. For example, your organisation may be split by geographical location into four departments, each serving a different area of the world. In turn, each department might have its own Sales, Marketing and Development teams. OfficeTalk lets you represent such a structure and gives you the tools to view diary information held within each group and sub group.