Hi Nely,
Could you please explain your scenarios in contract management and procurement side so that we will try to explain the steps and infact it is very difficult to explain all test scenarios here.please go through the below links for contact management for your reference hope this helps you
http://exchange.ariba.com/docs/DOC-2741
http://exchange.ariba.com/community/solutions/contractmanagement/blog/authors/bdunn
Thanks
Kiran