For a Windows laptop using the Outlook app:

https://support.office.com/en-us/article/open-and-use-a-shared-mailbox-in-outlook-d94a8e9e-21f1-4240-808b-de9c9c088afd

For a Mac laptop using the Outlook app:

https://support.microsoft.com/en-us/office/open-a-shared-folder-or-mailbox-in-outlook-for-mac-6ecc39c5-5577-4a1d-b18c-bbdc92972cb2

For Outlook on the Web with a desktop web browser:

https://support.lutheranchurchofhope.org/a/solutions/articles/11000005309

For a mobile device (Android/iOS) using the Outlook app:

https://support.microsoft.com/en-us/office/add-a-shared-mailbox-to-outlook-mobile-f866242c-81b2-472e-8776-6c49c5473c9f?ui=en-us&rs=en-us&ad=us