Here is an example to enable Audit Trail on AP_SUPPLIERS and AP_SUPPLIER_SITES_ALL tables:
a) Responsibility: System Administrator
Navigation: Profile > System
Query Profile: 'AuditTrail:Activate'. Click FIND
Set it to 'Yes' at Site level.
b) Enable Audit Installations (AP)
Navigation: System Admin > Security > Audit Trail >Install
Enable Audit Installation for AP
c) Define Audit tables and desired columns.
Navigation: System Admin > Security > Audit Trail > Tables
Query for user table name 'AP_SUPPLIERS' and add columns on which you want to enable trail
do the same for table AP_SUPPLIER_SITES_ALL
d) Define an Audit Group and associated tables
Navigation: System Admin > Security > Audit Trail >Groups
Create Audit group for table defined in 'C'
e) Run Concurrent program 'AuditTrail Report for Audit Group Validation' with parameter as your Audit Group.
f) Define an Industry Template contain Audit Group
Navigation: System Admin >Security > Audit Trail Reporting >Audit Industry Template
g) Run concurrent program "AuditTrail Update Tables".
h) Confirm existence of Audit tables (_A).
i) Run Audit report from SysAdmin menus.
Navigation: Security > AuditTrai > Audit Trail Reporting > Audit Report
Above request will fire a concurrent request whose output can be used for Audit reporting.