As I know the built-in slug only calls from one field. In this case you have to build your own app.
const typeField = sdk.entry.fields[‘your_type_field_id’];
const titleField = sdk.entry.fields[‘your_title_field_id’];
you can get value of those fields such as
typeField.getValue() and titleField.getValue()
After that create your own slug then set back value to your slug field.