Flange joints must be added to the system so that you can map, and associate them along with other assets.
To activate the Flange association into other tasks, navigate to Asset Types and click Edit. Set the Flange Joint Association to Yes.
This would reflect in the Assets and Tags Manager. To view the changes,
Select any asset and click Edit.
To add a Flange, go to Asset Association.
Under Line Segment section, check for option Flange in the Segment Type list.
Select Flange to map the asset.