Elements are assigned to a process via a connection of the belongs to type. A process is represented by an object of the Pool or Lane type.
The figure shows a group object.
If the group is arranged in an object of the Pool or Lane type, an element that belongs to this group has at least two connections of the belongs to type. An element has connections of the belongs to type to each group to which it belongs and also a connection of the belongs to type to the object of the Pool, Lane, or Subprocess type to which it belongs.
Move
If the process is moved, all of the elements that are linked via a connection of the belongs to type are also moved.
In a BPMN diagram, you can create visual groups that do not have any syntactic meaning. They are for arrangement purposes only. Elements that belong to this group object are linked with this group via an invisible connection of the belongs to type. In this case, there is no embedded relationship between the BPMN element and the group.
The connection of the belongs to type is automatically created if an element is moved to a group.
If the group is moved, the elements linked to the group via a connection of the belongs to type are not moved. If you move the group so that it no longer encloses its elements, the connection of the belongs to type between the group and the elements is automatically removed.
Delete
If a group is deleted, the elements remain. However, if a pool is deleted, all of the elements in the pool are also deleted.
Copy or cut
When you copy or cut the group, its elements are not copied or cut.