On the task list, you can see what kind of tasks are currently waiting for processing. These guidelines are about approving invoices. If you need to review invoices, see this article instead. If you are a professional AP user who needs to view or act on invoices across your organization, check out the AP Pro interface instead.
If you want to do some other action than approve, click the arrow next to the Approve button. You can see the available options in the drop-down list. For example, if you want to forward this approval task to another user, click Forward.