In Primavera when we use the default “Critical” filter, it will show the critical path for the whole project (for the last activity).

How about if we want to show critical path for an activity which is somewhere in middle of project, not the last one.

In this case we can use “Multiple float paths” function.

You can go to Tool -> Schedule -> Option -> Advanced tab ->

• Check “Calculate multiple float paths”
• Check “Free Float”
• In “Display multiple float paths ending with activity”, you choose the activity you want the critical path ending with.
• In “Specify the number of paths to calculate”, I usually choose “1”.
• Click Close and Run Schedule.

Then you go to View -> Group and Sort.

• Group by “Float Path”

You can also create a Filter so that we can hide all unnecessary activity.

Then we can have the “small” critical path for the activity we want