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In Outlook on the web (OWA), right-click the Folders item in the left navigation panel and then choose/click on Add shared folder.
Enter either the shared mailbox name or username click Add. In this example the name is Software Purchases Shared Account and the username is ist-swpusharedmb@uwaterloo.ca
As you complete this field, a list of suggested account names will display.
Once entered, the account name will appear in the list of mail folders/boxes.:
Do you need to send email from the shared mailbox address? See Send email messages from a Shared Mailbox - Outlook online (web browser)
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