The FileCap Office 365 plug-in can be installed using the manifest file, which can be downloaded from the"Plugins and apps" page under "Web Outlook."
There are two options for installing the FileCap Office 365 plugin, per user or for the entire organization, both of which are explained below.
Note: Changes made within Exchange/Office 365 are not implemented immediately in all situations. As a result, sometimes the plug-in is not visible until some time after installation. Source:The following Microsoft article.
When the application is added select whether the application should be available to all users and whether it should be automatically enabled for all. Here you can also set whether the add-in is disabled by the end user
Check the plug-in in OWA
To test the operation of the plug-in, the following steps can be performed:
Log in to the mailbox
Create a new email
Click on the FileCap icon at the bottom
The FileCap plug-in will open on the right side of the screen.
Is the plug-in not available to users?
Create a new email
Click the 3 dots at the bottom of the add-in ribbon and click "Get Add-ins."
Go to "Admin-managed"
Click "Add" to make the FIleCap plug-in available.
Follow the steps under "Check plugin in OWA" to verify that the plugin loads correctly.
The plug-in is not displayed on new emails?
If the plugin does not display by default when creating new emails, the following steps can be taken.
Click "View" at the top and choose "View settings."
Go to "Mail" -> "Customize actions."
Select FileCap under "Message Surface" and "Toolbar."
Create a new email, by default the FileCap plug-in should now appear.
Follow the steps under "Check the plugin in OWA" to verify that the plugin loads correctly.