Depending on your permissions, the Requisition Entry portlet lets you:
Create requisitions, as described in Entering requisitions.
Check the status of a requisition, and send e-mail reminders to approvers, as described in Checking the status of a requisition.
If you need to review and take action on a requisition that someone else entered, note that this is done through the Item Approval portlet. For details, see Approving and declining items.