Customizing Business Central Using Extensions
You can change Business Central by installing extensions that add functionality, changes behavior, or gives you access to new online services, for example.
Note
To install extensions from AppSource or add per-tenant extensions, you must have the right permissions. You must either be a member of the D365 EXTENSION MGMT user group or you must have the D365 EXTENSION MGMT permission set. If you are an administrator, you can assign user groups and permissions to other users in your company.
To use the functionality that is provided by an extension, such as opening pages, running reports, selecting actions, and so on, you must be assigned the permission sets that are installed as part of the extension.
Important
The upload of per-tenant extensions and the installation of AppSource extensions is not supported through the Extension Management page for on-premise installations.
When you first launch Business Central, some extensions are already installed for you. Over time, more extensions will be made available to you, and you can then choose if you want to use the extension or not.
For example, Microsoft provides an extension that provides integration with PayPal Payments Standard. This extension is installed by default. But if another extension is made available that offers integration with another payment service, you can install the new extension and then choose which of the two services to use.
You manage the extensions on the Extension Management page. You can access this page from Home. Alternatively, choose the Search for Page or Report icon 
in the top right corner, enter Extension, and then choose the related link. For more information, see Installing and Uninstalling Extensions.
Note
If you think you should have access to an extension but you cannot find its functionality, check the Extension Management page - if the extension is not listed there, you can install it as described in the following section.
Note
New extensions are not available in AppSource immediately after we announce an update. You can keep an eye out for the extensions at AppSource.microsoft.com.
See Also
Extending Dynamics 365 Business Central
Business Central Extensions by Other Providers
Set Up the Envestnet Yodlee Bank Feeds Service
Enable Customer Payment Through PayPal
Migrating Business Data from Other Finance Systems
Setting Up the GetAddress.io UK Postal Code extension
Business Central Extensions by Other Providers
Getting Started