Hi @Kerry O'Boyle
Yes. You can use Approvals apps in Teams. The Approvals app is available as a personal app for all Microsoft Teams users. The Approvals app provides a simple way to bring auditing, compliance, accountability, and workflows to both structured and unstructured Approvals in Teams.
For more details about approvals app in Teams, you could refer to: https://support.microsoft.com/en-us/office/what-is-approvals-a9a01c95-e0bf-4d20-9ada-f7be3fc283d3
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