Unified Auditing for Schema SIUD

1 - How can we audit all schemas in a database for Select, Insert, Update, Delete on all of the tables without specifying each table name?

2 - Is there an automated way to add new tables as they get created?

I was hoping for a less manual way of taking care of all existing and future tables.

Example from the manual:

CREATE AUDIT POLICY dml_pol
  ACTIONS DELETE on hr.employees,
          INSERT on hr.employees,
          UPDATE on hr.employees,
          ALL on hr.departments;

Thank you