By using PowerShell, you can install AskCody Meeting+/RoomFinder/Welcome+ as an organization app and make it available to a particular set of users in the organization.
The Exchange server must be able to reach the target URL.
This example installs the AskCody Meeting+/RoomFinder/Welcome+ app from a URL and enables it by default:
New-App -OrganizationApp -ManifestURL -ProvidedTo SpecificUsers -UserList "user1", "user2", "user3" -DefaultStateForUser Enabled
Once the app has been installed, further modifications must instead be done using the Set-App cmdlet as follows:
Set-App -OrganizationApp -Identity 9e8c68fc-6037-49c6-afea-e8edaec68d76 -ProvidedTo SpecificUsers -UserList "user1", "user2", "user3" -DefaultStateForUser Enabled
In either case, the specified users can activate the new app when viewing appointments or meeting responses within Outlook, Outlook Web App, or OWA for Devices.
Alternatively, if the app is installed using "-DefaultStateForUser Disabled", the specified users can enable the app from Outlook Web App Options. Finally, "-DefaultStateForUser AlwaysEnabled" permanently enables the app for the specified users.
If an installed app isn't enabled, users can enable the app from Outlook Web App Options. Similarly, if an app is installed, an administrator can enable the app from the Exchange Administration Center or by using the Enable-App or Set-App cmdlet.
Go to Technet.Microsoft.com to read more about installing or removing apps for Outlook for your organization.