Create entities, groups, and templates to define the tables that you want to copy to the subset database. An entity defines a set of tables that are related based on physical or logical constraints. A group defines a set of unrelated tables. A template is an optional component that contains the entities and groups.
Assign data masking rules to columns in the data source.
Create a data subset plan, and add the entities, groups, and templates to it. For each column in a parent table, you can define criteria to filter the data.
Create a data masking plan and assign the policies and rules to the plan that you want to apply.