Any designer can model a system, but by a major steps her/his working on the project will be much easier.
1 – Add items of the system
We can insert items / families into a project using insert family tool
then by selector type section at the Properties Palette we place them to specific positions in building.
2- Add items to a system.
group system component in same system, by specify the type and select items then create a system, put a name to find it any time easily.
will be easy now, we can do it manually or automatically by generate tool