If you have a new client, you have to create a new folder and a new database. To do this, create the same folder structure that you already created for your first client. Then, copy the demo files for the database and time series database and paste them into their designated place:
Now rename the databases (Client2_Data.mdb; Client2_Zre.mdb) and adjust the corresponding result and time series folders as well (Client2_Data; Client2_Zre).
Tip: Do not edit the demo folder created during the installation. Keeping it as-is up to the client directory, one can copy the folder and rename the files for new clients.