Use ALTER PIPELINE to add steps to a pipeline.
1. Add Step 1.
1 SQL> alter pipeline p_pay_extract add step s_get_month_period_type;
2. Add Step 2.
1 SQL> alter pipeline p_pay_extract add step s_set_period_end_date;
3. Add Step 3.
1 SQL> alter pipeline p_pay_extract add step s_set_period_name;
4. Add Step 4.
1 SQL> alter pipeline p_pay_extract add step s_create_pay_extract;