Share 'Modelling bolts and area loads'

Hi, I am new to Karamba3D and I would very much appreciate some help with the software. I have a truss that is illustrated in the figure below. The truss is composed of two individual components (one of the components is outlined in red for illustration). The two components are connected through bolts at the black circled areas. How can I go about modelling the bolt within the program? I want to…