In Full Convert, you can customize the way tables are placed in different schemas, as well as the way we map data types source table columns use to their closest equivalents in target database.
Schemas are defined as simple <source>=<target> pairs. There is a special (any)=(same) pair, which means that any schema from source database should be mapped as a same schema in target database. For example, a HumanResources.Employee table in source would be mapped to HumanResources.Employee table in target database. Keep that line at the end of the schema mapping rules, as rules are applied from top to bottom and first one that matches is applied.
Again, data type mapping rules are listed as simple <source>=<target> pairs and first matching rule will be applied. Rest of the rules won't be applied.
To learn which rule you should specify to override default behavior, it's best to go to table mapping screen and not source data type for table column you want to change.
Rules can be specific or non-specific. Specific rule will match precision (and scale), while non-specific rule will match data type regardless of precision.
List as many rules as you want.