The hierarchy of a collection can be changed from the 'Edit' page of that particular collection.
You will be directed to an edit
collections page after you create a collection or when you click on a
collection from your institutions collection tree structure from the
The Edit Collection Page as seen from the figure above allows a user to edit properties of an existing collection.
Changing the Collection Hierarchy:
Simply click on a new parent collection, If you wish to make this collection as a top level collection under your institution simply click on the very first Collection also known as the root collection.
Your changes are saved automatically.
Please note that all sub-collections under the collection you are trying to move are also moved automatically to the new parent.