If the Gears panel is not currently displayed, select the desired gear by
clicking on it in the Project Browser or in the modeling window.
The Gears panel is automatically displayed.
Click the Joint 1 collector and the select the first
joint to be constrained by the coupler from the modeling window, or double-click the collector to open the
Model Tree (from which the desired entity can be
selected).
In the same manner, click the Joint 2 collector and
select the second joint to be constrained by the coupler.
Click the Point collector (under Origin) and select the
location at which the constraint will be placed.
Click the Point collector (under Alignment) and select a
point to define the direction of the gear, or, using the drop-down menu to the
left of the collector, select Vector and choose a vector
to direct the gear.