Groups

1. Making groups gives your geometries a little protective bubble, so that if you move one object it doesn’t mess up another object. It also keeps all the parts of the object together. 
   1. To group your geometry use the Select tool either draw a box around the object, use CTRL+A to select all the shapes in the model, or triple-click on the object to select all ungrouped geometry. Right-click and choose Make Group.
   2. To change something in a group, double-click on the object. A dashed black line will appear around the group to let you know you’re working inside the group.
2. Groups can also be locked (select group > right-click > Lock) and nested (group 1 set of geometries, hold the shift key and click geometry > right-click > Make Group).

Components

Components are essentially supergroups. Like a group, making an object a component provides a protective bubble around the object. A key difference is that you can make a copy of a component, and when you make a change to that component the change will be reflected on all the copies of that component. This makes it much easier when working with a model that has repetitive pieces (like a dining room with 8 chairs).

1. Select all the geometry, then right-click and select Make Component.
2. In the pop-up window, give the component a name and click Create.

Changing components

1. To change all the copies of the component in the model, double-click into one component and make your change. The change will be applied to all the components.
2. To change only one copy of a component, select the component. Right-click and select Make Unique. You can make changes to this component that will not be applied to the other copies of the component, while keeping your component a component.