A lot of important functionality is available in the shortcut menu (cells, parameter bar, and so on). Also, you should enable the View > Properties pane and investigate options for each cell.

Ansys Workbench units and options are not passed to CFD-Post; this could require you to set units twice.

Use the Files pane to determine which files were created for each cell/system. This can be very useful if you need to do some runs or change some settings outside of Ansys Workbench, or if you want to manually delete some but not all files associated with a particular cell. It is easiest to find files associated with a specific cell by sorting the pane by Cell ID. This will sort the list by system and then by cell.

When selecting a system in the toolbox, Ansys Workbench will highlight the cells in any systems already in the Project Schematic to which a valid connection can be made.