HI @luismrf
Starting from ARSA 2019 harmonic analysis results calculated with damping re presented as 360 components in load case similar to automatic combination case. So you can choose
harmonic load case (including all components)
harmonic load case + (maximal envelope)
harmonic load case - (minimal envelope)
To use harmonic results component in combination you have to extract one or more harmonic load case component
- select harmonic load case and click Select component option

- using slider select requested component
- choose Create case from component (using >> all components will be converted)
- accept with OK

Once component/components are extracted they are available in manual and automatic combination windows
If I managed to answer your question(s) press the Accept as Solution button please. This will help other users to find solution(s) much faster. Thank you.

Krzysztof Wasik