Use Preferences > Construction Options  
  to set the tolerances enforced
         by the modeling tools. The requirements for transfer to specific
         CAD packages are available as presets.
      
To set up tolerances for transfer to a specific CAD package
 .
         To create a set of custom tolerance setting
If the settings you want to add are very similar to one of the preset CAD packages, click the name of the CAD package.
Otherwise, click User Defined.