FAIL TO GENERATE A LOAD COMBINATION - DEFINE COMBINATION

Hello,

I am in trouble trying to generate a load combination between self-weight loads of a structure and moving loads on that same structure.

When I select the option "add new load cases > define combination", this is all I see:

As can be seen, on the right there are four load cases: one of self-weight and the other three of moving loads. However, in the left box ("add new load cases > define combination") I can only see the self-weight load, therefore I am not able to generate a load combination that includes all the load cases created (self-weight & moving loads).

Thanks in advance!

Ignacio