Answer:
Members that are also included in sets of members should not be selected parallel to the design. This leads to duplicate entries; for example, "Effective Lengths - Members" and "Effective Lengths - Sets of Members" or for nodal supports.
In the design, the maximum result for both entries is determined and this result is only displayed in result tables. Thus, it is difficult to control and trace which results arise from which entries. Therefore, we do not recommend designing all members and sets of members in a single design case. Instead, you should create several design cases in which you split the components.