How to Install the Outlook Plug-in for a Single Instance of Outlook
For most instances, clients will deploy the Outlook add-in via the O365 centralised deployment, as this pushes the add-in to all users and does not require each user to perform an installation. However, there are times when you may wish to deploy the add-in to only a single user. Perhaps during the testing of the application, you don't want all users to see a new button in Outlook.
To achieve this you need to manually add the plugin to Outlook for the target account. You will need either the Outlook plugin file or the URL of where to access it.
Firstly, Add-ins are installed into Outlook using manifest files. Our files can be accessed here. To save this link, right-click the link and click "save link as".
Log in to Web Outlook here.
Click on the calendar on the left-hand side and select "New event".
If "Get Add-ins" is not showing please go to "Settings", "View all Outlook settings", "Calendar" and then click on "customise actions" then turn on "Get Add-ins".
TIP: You can follow the same process as above using Outlook Desktop, but the Get Add-Ins button should already display on the calendar view.