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Otherwise, the OC must be installed separately on all client computers. This can be done for one client computer at a time by following .
- For Windows users, follow the instructions at: https://docs.microsoft.com/en-us/office/dev/add-ins/testing/create-a-network-shared-folder-catalog-for-task-pane-and-content-add-ins.
- For Mac users, follow the instructions at: https://docs.microsoft.com/en-us/office/dev/add-ins/testing/sideload-an-office-add-in-on-ipad-and-mac.
Please note that it might be possible to avoid having to install the OC separately on all client computers. However, this approach has not been tested. The approach can be tried by following the instructions at https://docs.microsoft.com/en-us/office/dev/add-ins/publish/publish-task-pane-and-content-add-ins-to-an-add-in-catalog. It involves publishing the OC to an app catalog with an on-premises SharePoint Server. Note that this approach will not make the OC available for Mac users.
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