Possible reasons for install apps not showing. Outdated windows could be the reason, update your apps, scan for virus and last run the troubleshooter. Thanks

The Dell apps may not be appearing on the start menu when logging in as other domain users due to the user profile not having the necessary permissions to access or display the apps, and adding the apps to the start menu manually or modifying the user profile permissions may help resolve the issue.

• Right click on the empty space of the Start Screen.
• Click on the option “All apps” from the app bar that has popped up from the bottom of the screen.
• This will show you all the apps that are currently installed on the computer.
• Check if the missing apps are listed in the “All apps” menu.
• If they are present, then you may pin them to the Start Screen, by right clicking on the app tile and selecting the option “Pin to start”.