You can create two databases for your two accounts, and manage them separately by doing the following:

1. Install TO3000 using the "Install an empty database" option when prompted. This will be your Database 1.

2. Rename the folder "C:\Users\Public\Documents\AIT\TO3000, Version 3D\db" into something else. This new folder will be your Database 1 location.

3. Install TO3000 once again using the same "Install an empty database" option when prompted.

4. Now you have your Database 2 installed and active and the folder "C:\Users\Public\Documents\AIT\TO3000, Version 3D\db" is your Database 2 location.

5. You can switch between your databases using Database Settings > Set Database Folder. In the window that appears, you can select your Database 1 location or Database 2 location.