To identify pipes to include in the cost calculation, click the Design Group tab and assign a name to the group. Then in the Element ID column, create a group by clicking the ellipsis (...) button and selecting the pipes from the drawing to be included in this group. Once done, click the green check and the list of elements appears.

Each group should be created so that the individual pipes in the groups will share the same cost function.

When doing manual cost estimating, there is no need to use the tabs for Design events, Rehabilitation Groups, Design Type or Notes.