WBS in Planning Board

Dear All,

Need help in understanding how and when will the % duration of work which we get while confirming an acitivty will show up in higher WBS.

Eg.

WBS level 1 % duration of work doesnt show up (no time bar visible)

WBS level 2 % duration of work - doesnt show up (only actual time bar visible)

Activity 1 % duration of work 20- visible in plan board

Activity 2 % duration of work 20- visible in plan board

Requirement at higher WBS it should show % duration of work as it shows in Microsoft project.

Please Help

Regards,

Farhan