I'm using 3D experience for makers and am trying to modify (or create new) weldment profiles. Basically looking to add additional reference points on the weldment profile sketches to have more options for locating. 

My understanding of how to do this is to go to the systems library feature part by: select file - open - C drive - Program files - Dassult systemes - Solidworks 3Dexperience - solidworks