To add a requirements to a Position, click on the pencil next to the Position name.
Scroll to the 'Requirements' section and select the Requirements you want to add to the Position. Click the arrow > to move selected Requirements from the 'Available' to the 'Selected' area. Select the double arrow >> to move all Requirements over from the 'Available' to the 'Selected' area.
Once you have made all of the required changes click on 'Update Position' at the bottom of the page.
To remove a Requirement, scroll to the 'Requirements' section and select the Requirements you want to add to the Position. Click the arrow < to move selected Requirements from the 'Selected' to the 'Available' area. Select the double arrow << to move all Requirements over from the 'Selected' to the 'Available' area.
Once you have made all of the required changes click on 'Update Position' at the bottom of the page.