Right click on Model databases, you can import a metabolic model in SBML/spreadsheet format as described in Metabolic Models.
You can directly edit/update the content of the imported model.
Right click on Reference databases, you can import a reference database provided in Reference Databases
Right click on a model, you can add the information about metabolites and reactions described in your model to the reference database.
extracting reactions whose associated orthologous genes can be mapped to a reference reconstruction. Such an automatic function can greatly reduces the manually typing effort and provides accurate evaluations on Boolean statement once the list of orthologous-gene pairs is available.
Right click on the Project to Creat/Edit Models, Reconstruction