The <RGroup> ("repeating group") element
is a container for a set of <RGroupElement> elements.
Here, each <RGroupElement> identifies a migration
scheme and up to five approver roles. The number of <RGroupElement> elements
must match the element_count specified by <MSCount>.
2
You can specify up to five approver roles for each migration scheme.
You can omit unused <Authnn> elements.