D365: How to set default App to show after login?

Hello,

we set up a custom app for our D365 instance. Let's say it's called "MyApp". In "Settigings -> MyApps" I can hide all other apps by restrict them to certain security roles. That works fine and the relevant users only see "MyApp" in the available apps. But, after login the D365 default app is loaded instead of our custom app. Is there a way to set our "MyApp" to be loaded after a relevant user logs in?

Thanks for your help.