Firstly, you will need to login to your Notify account, you can do this here
1. Click Organisation Structure
2. Click on the node you are removing
Tip: Click on the arrow icon on each item to view sub-nodes.
3. Select Archived
4. Click Save
The archived item will then have a grey tick next to it to show that it is no longer active.
Tip: Check the Hide Archived Items box to have an up-to-date view of your organisation structure.