Yes, the dimensioning function is available in every graphics window of the "New Steel Joint" or "Edit Steel Joint" dialog box. However, the geometry of a connection is your concern in most cases. Therefore, open the "Components" tab and right-click in the graphic window. Then, select the New Dimension function in the shortcut menu. The "Linear" and "Angular" options are suitable for the dimensioning of joints.
A dialog box known from RFEM appears, where you can control the settings of the dimensions.
The graphic provides you with the possible snap points. When moving the pointer over the components, suitable snap points are displayed.
Click the desired snap points (multiple selection is possible) and place the chain dimensioning.
It is possible to show or hide the dimensions using the toolbar or delete them using the shortcut menu of the dimension line.