We want to use our own list of users rather than APEX users. That means we need to control the built-in context so that context like MY_TASKS has a value we give it.
apex_approval.get_tasks ( p_context => 'MY_TASKS' )
apex_approval.get_tasks ( p_context => 'INITIATED_BY_ME' )
apex_approval.get_tasks ( p_context => 'ADMIN_TASKS' )
Thank you.