The below is the example as described in ProtaSteel Basic Training Guide :

- Pick Bolted Gusset Plate Connection

- Pick the beam
- Pick the bottom brace
- Right-click
A gusset plate connection will be created joining the bottom flange of the beam.
Let’s push back & shorten the green gusset plate so that it ends exactly at the beam end for constructability.

- Select connection macro by selecting the macro sign > Press Enter
- Alternatively select the gusset plate > press “M” > Press Enter (wait for the macro dialog)
- Enter value in the input field.
- Apply.
You can see the plate is shortened and the stiffener plate is added. This is more constructible because the gusset plate & stiffener can be assembled off-site as part of the beam assembly.
- Create the most appropriate View first before creating the connection. The same view & orientation will be used to produce the drawings. Click this topic for more details : Creating new Views
- Press F9 on the joint to set the point of interest. The view will then rotate about the point of interest.