You can start the [Calculation] in every RF-/JOINTS window by using the corresponding button.
RF-/JOINTS searches for the results of the load cases, load combinations, and result combinations to be designed. If they cannot be found, the RFEM or RSTAB calculation for determining the design-relevant internal forces starts first. If you have selected direct input of internal forces (see Chapter 2.3.2), the RFEM/RSTAB results are not relevant for the design.
You can also start the calculation in the RFEM/RSTAB user interface: The design cases of the add-on modules such as load cases or load combinations are listed in the To Calculate dialog box (menu Calculate → To Calculate).
If the RF-/JOINTS cases are missing in the Not Calculated section, select All or Add-on Modules in the drop-down list below the section.
You can use the 
button to transfer the selected RF/-JOINTS cases to the list on the right.
Click [OK] to start the calculation.
To calculate a design case directly, use the list in the toolbar: Select the RF-/JOINTS design case and click [Show Results].
You can subsequently observe the calculation process in a dialog box.
