As of Portal 18.104.22.168 this feature is not currently available. There is an active feature request to add this to a later release however no timeline is confirmed. It is advisable to check back on the Portal product documentation pages for any updates to this.
Optionally, the CA Professional Services team can be engaged for any customization needs.
CA Documentation Site: https://docops.ca.com
CA Professional Services: https://www.ca.com/us/services-support/ca-services.html