Approvals is a native Teams application that lets you create, manage, and share approval requests and sign-offs. You can quickly start an approval flow from the same place you send a chat or have a channel conversation, or from the approvals app itself.
A feature has been added that lets you require that sign-offs occur in a specified order, if you choose. This ability can be useful if you have an approvals process that requires clearance from one person before the next should sign off.
For more information about Approvals, see Approvals is a Teams Application for Approval Requests and Sign-Offs.