Copilot Agent - assigning permissions to apps like Outlook and OneDrive

I'm trying to create an agent to do the following:

- Automate the process of creating an email addressed to XXX
- Attach the most recent file from OneDrive without renaming the file.
- Prompt the user for a subject line before sending the email.
- Only send the email after the subject line is provided by the user.
- Launch the agent when the user enters the prompt 'XXX"
- Ensure the attachment is not renamed during the process

Copilot will create the agent, but does not send the email. Copilot tells me that the agent may not have access to Outlook to send the email. How do I assign permissions to a Copilot agent? All my searching over the last two hours has left me with no solution. 

Any assistance is appreciated. Thank you!