When I go into the Services view and click on the 'Charts' view, then select the 'Customized View' option to add any of the available options, they do not hold. If I were to leave that page and come back into it, the selected option I chose is gone and has to be re-added again.
Option to add Monitored Inventory was chosen and added...
But if I leave this view and come back to it, the option is gone and I have to re-add it again.
Release : SAAS
Customer was using the Default Layout which you can't change.
You have create a new Layout, once that is done you can modify it like adding Monitor Inventory and save the changes to the new Layout.