Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Dear Lisa Friis
Good day!
Thank you for posting to Microsoft Community. We are happy to assist you.
According to your description, the issue of your concern that relates to the MS Defender license for shared mailbox.
Please be kindly to allow us to double confirm your scenario that whether you have the same requirement as the similar thread in here - Shared mailbox defender license.
If not, could you please share us more detailed requirement with us that we can give you further assistance.
We're glad to assist you and looking forward to your new updates.
Sincerely,
Alex | Microsoft Community Moderator