Click Mechanical Joint .
Select the Plate Two assembly component as the first element that will be used to create the mechanical joint.
The Mechanical Joint Definition dialog box appears.
Select Spherical in the Type combo and check the Set parameters as default option.
Select Rigid Support.13 as the second component that will be used to create the mechanical joint.
Click OK.
Select Rigid Support.13.2.
Repeat steps 6 to 8 with the Rigid Support.13.3 to Rigid Support.13.6 supports.