Hi @Vanesa Cruz ,
Welcome to our forum.
I understand that you would like to migrate multiple gmail accounts in your organization to Microsoft plan, is it right? If so, I have researched a lot about it and found a related article : Migrate consumer Google Workspace (formerly G Suite) mailboxes to Microsoft 365 or Office 365, which mentioned the Migration from Google Workspace mailboxes using the Microsoft 365 admin center, please kindly check if it could work for you.
If that's invalid or you still need further assistance, please kindly understand here we mainly focus on general issue on Outlook desktop client, considering your issue may be more related to the account migration, in order to solve it better, it's suggested to post a new thread in this forum, so that there would be more experts on Office 365 could provide you with more targeted suggestions.
The reason why we recommend posting appropriately is you will get the most qualified pool of respondents, and other partners who read the forums regularly can either share their knowledge or learn from your interaction with us. Thanks for your understanding and hope your question will be resolved soon.
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