Hi @BenjaminStusghish ,
Welcome to our forum!
Do you mean combining the calendars of two accounts or importing calendar ics files in Outlook?
If you have ics files or pst files of calendars, you just need to import them into Outlook as mentioned by Tkujala.
If you have configure two accounts in your Outlook, it's suggested that you could create a rule to forward the meetings received from an account to another account via File>Info>Manage Rules & Alerts>New rule…>Apply rule on messages I receive. For meetings that you've already received, export them and import them into another account.
Hope the above help!
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