Explanation:

Scenario:
1. Web administrators will deploy Azure web apps for the marketing department.
2. Each web app will be added to a separate resource group.
3. The initial configuration of the web apps will be identical.
4. The web administrators have permission to deploy web apps to resource groups.
Steps:
1 --> Create a resource group, and then deploy a web app to the resource group.
2 --> From the Automation script blade of the resource group , click Add to Library.
3 --> From the Templates service, select the template, and then share the template to the web administrators .
References:
https://docs.microsoft.com/en-us/azure/azure-resource-manager/templates/quickstart-create-templates-use-the- portal