Primavera P6 Professional allows you to plan, schedule and control many complex projects. You can allocate loads of resources and can track the progress. You can also monitor as well as visualize the project performance against the plan. You can also conduct what-if analysis and can also analyze the alternative project plans. Primavera P6 Professional allows you to view the lag and relationship type data in the Activity Table in the Activities window. Two columns which are Predecessor Details and Successor Details have been added to the Lists grouping in the Columns dialog box. All in all Primavera P6 Professional is an impressive enterprise project portfolio management softeare application which can handle large-scale and multifaceted projects.