Groups in Sumo are useful organizational tools, reducing visual complexity and improving display performance through object control
Groups aren’t necessary for a successful analysis; however, they help with the manipulation of the model. In a CAD program like PADDS or AutoCAD, groups are similar to layers. Groups can be created and named for each functional category of objects, such as walls, columns, beams, etc.
Each object has a property called Group, which can be found under the General Subheading on the Properties Palette. The visibility of a Group can be adjusted in the Groups Palette.