When your system is configured for multiple levels of Authority and you receive a notification that someone wants you to approve a requisition you will be presented with two options. These two options are dependant on your level of monetary authorisation in the system.
Whether or not you are authorised to fully approve (and create a purchase order for) the requisition depends on the total amount of the goods requested. This is indicated in the colour of the total at the bottom of the items.
If the total appears in Green, this indicates that you have the authority to create a purchase order for that amount. In this case you will be presented with a Generate Purchase Order button, which when pressed, will approve any non-declined lines and create a purchase order.
If the total appears in Red, this indicates that the total amount of the requisition is above your authority limit. In this case you will be presented with a list of your managers and an Approve and Send button. By pressing this button you are forwarding on the Request up the line to someone who may have the authority to create a purchase order for the request. You will be presented with a text box, allowing you to add any comments or thoughts that your manager can review to help them make their decision to approve or not.