You can view and override the node catalog by selecting (Node Override) or by selecting the Rt-click > Node Catalog Override menu option on a highlighted node in single line mode. The Node Catalog Override utility helps override the default autofittings preference. For example, if two opposite branch line connected from a single point and that too at the end of the route point, then in this case usual practice is to connect a tee with two branch connection with main line, but in all other branch connection we may want to keep takeoffs, and autofittings preference set to takeoff for branch connection, then in this case you may want to override the autofittings preference. In Node Catalog Override dialog, the default category <None> can be selected to apply a new category available from the pull-down Category options. For a given category you will see the Fitting options to select one most suitable in the design. Apply the node catalog simply by clicking in the view. Overridden node catalog can be altered to a different category/fitting suitable in the route design using the above step.