When you have selected to Use Advanced Mappings in the Advanced Options window, in the Selected Card Group you know see two extra buttons appearing:
Group | Function(s) | Description |
Selected Card | Card-definition wizard | Opens the Card-definition wizard to make advanced changes |
Mappings window | Opens the Card-definition wizard on the mappings section |
All features are included in the Card designer, so you are unlikely to need either of these options.
The exception is that, for advanced users, you can use these options to create cards and select pre-existing card design or database definition files.