There is a task for PCT in the Jobs and task page by the name 'Capture Personality' for capturing personality and 'Distribute Personality' for distribute;
You can capture client computers personality using this task , You need to provide Personality name , and need to select the template as per your requirement ;
You can find a PCT directory at \Program Files\Altiris\Altiris Agent\Agents\Deployment\Task Handler\PCTPackages , This directory contains Packages and configuration settings.
You can use different tools available at this location to Crete templates for custom applications.