1. How to create and update apps?

1. Create an app

Steps:

• Sign in Admin Console.
• Select Apps > App Library > Create Application
• You can drop app APK or click to upload.
• Under App Detail, select a default language and add a title for your app. Type the name of your app as you want it to appear on App Library.
• Create your app list and completing App listing:

1.1 Set up App listing 

App details:

You can add a name, short description, and full description for an uploaded app.

Graphic assets:

You can add up to 8 screenshots for each supported device type: phone, tablet (7-inch & 10-inch), etc. To upload screenshots for different device types, under “Screenshots” click a device-specific tab.

Requirements:

• JPEG or 24-bit PNG (no alpha)
• Minimum dimension: 320px
• Maximum dimension: 3840px
• The maximum dimension of your screenshot can't be more than twice as long as the minimum dimension.

1.2 Languages & translations

When you upload an app, the default language is English (United States, en-US). You can add translations of your app's information along with in-language screenshots and other graphic assets.

Steps:

• Upload app.
• Select an app and review the languages listed under “App Details."
• To add new languages, select +Add languages.

Tips: If the app you want to upload to App Library is on Google Play, you can click “To acquire from Google Play” to autofill in-app details quickly.

2. Update an app

When you're ready to make changes to your APK, use the following checklist to make sure that existing users will receive your update.

• The package name of the updated APK needs to be the same as the current version.
• The version code needs to be greater than the current version.
• The updated APK has the same signature as the current version.

2.1 Upload your Updated APK

Steps:

• Sign in Admin Console.
• Select Apps > App Library > choose the app you need to update and click the “Update” button.
• Upload your APK, fill in update log, and click “Next”
• Select devices you need to update, staged rollouts range and app publish time.
• If you do not want to release your app to App Library immediately, click ”Save but not release”; Or click “Release”.

Tips: You can edit the version details which was saved in the draft box and continue with the release process when you click the  icon the second time.

After doing so, click Next to App Release On Demand