# Centralised Add-in Install

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**Requirement** You need to be enabled to access the new interface of Cryoserver Online.

Centralized Deployment is the recommended way for an Office 365 admin to deploy Office Add-ins (Word, Excel, PowerPoint, and Outlook) to users and groups within an organization, provided the organization meets all requirements for using Centralized Deployment as outlined in this article.​
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#### How do I know if my organization is set up for Centralized Deployment? <a href="#how-do-i-know-if-my-organization-is-set-up-for-centralized-deployment" id="how-do-i-know-if-my-organization-is-set-up-for-centralized-deployment"></a>

​Centralized deployment of add-ins requires that users are using Microsoft 365 Apps for enterprise (and are signed into Office using their organizational log-in credentials) and have Exchange Online mailboxes. Your subscription directory must either be in, or federated to, Azure Active Directory.​ Centralized Deployment is only supported for online mailboxes. It does not support deployment to on-premises Exchange mailboxes.​You can use the [Centralized Deployment Compatibility Checker](https://learn.microsoft.com/en-us/microsoft-365/admin/manage/centralized-deployment-of-add-ins?view=o365-worldwide#centralized-deployment-compatibility-checker) to determine if your subscription is eligible.
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#### &#x20;<a href="#how-do-i-know-if-my-organization-is-set-up-for-centralized-deployment" id="how-do-i-know-if-my-organization-is-set-up-for-centralized-deployment"></a>

### Making the “Add-In” (that uses OAuth SSO) available to Office applications. <a href="#making-the-add-in-that-uses-oauth-sso-available-to-office-applications." id="making-the-add-in-that-uses-oauth-sso-available-to-office-applications."></a>

1. Obtain the Cryoserver Add-In “manifest” (an XML file) from the appropriate React UI.
   * Open the React UI
   * Click in the top right profile icon.
   * Click "Download Office Add-in"
2. Access the Microsoft 365 Admin center, and expand the menus so that the “Settings” menu shows.\
   ![](https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FMAeLhCZPTsyBa6vlfTk8%2Fuploads%2F303zxzUo657FvTU5z3lH%2Fimage.png?alt=media\&token=42120646-2818-4127-9937-b740d59c22f2)
3. Open the Settings menu, and click the Integrated Apps menu. From here, click the “Upload custom apps” <br>

   <figure><img src="https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FMAeLhCZPTsyBa6vlfTk8%2Fuploads%2F9yYghH5EMh6ZT6EKSWX0%2Fimage.png?alt=media&#x26;token=31cbdf8b-6cb7-43bc-ab22-1a2082b78abd" alt=""><figcaption><p>Integrated Apps > Upload Custom Apps​</p></figcaption></figure>
4. From the Custom Apps panel, select the App Type of “Office Add-in”:<br>

   <figure><img src="https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FMAeLhCZPTsyBa6vlfTk8%2Fuploads%2FLxMKsiuWsmsJbs3oDNlg%2Fimage.png?alt=media&#x26;token=11009e03-d609-4033-8684-ba3d1c92d873" alt=""><figcaption><p>Select "Office Add-in"​</p></figcaption></figure>
5. Then select the Add-Id manifest file that you previously downloaded from the React-UI in Step 1.
6. You can then select WHO this Add-In will be applied to.
7. It displays in the Ribbon Bar (but only if an email is selected) or in the header section of the currently selected email.
   * After a few minutes, the Add-in will become available in Outlook and OWA (all version).