Some apps can show details and status (such as upcoming calendar events and the number of unseen emails) on the Lock screen. To add or remove the apps that can appear in the experience, do the following:
Step 1: Open Settings.
Step 2: Click on Personalization.
Step 3: Click on Lock screen.
Only one app can show detailed status, which by default is set to the Calendar app. If you want to select another app, click the app button, under Choose an app to show detailed status, to see the available Microsoft Store apps you can pick, or select None to disable the feature.
Using the Choose an app to show quick status option, it's possible to configure up to six apps to includes status on the Lock screen. Usually, you'll see the Mail, Calendar, and Skype apps, but you can always remove, change, or add more apps to the list clicking the app or "+" button.