In Control Hub:
Apps-> Embedded apps-> Private ->[App name]->Sidebar settings ->Make always on.
"Enable if you want the app to load when the Webex app starts and always be active (limit of 3). These apps will appear above website shortcuts in the sidebar, and may push items to an overflow menu."
The limitation of allowing only three apps to be constantly active (always on) is not appropriate and is restrictive.
Please consider increasing the limitation to a more flexible and reasonable number.
Thanks a lot