@Barathk Please use the following steps to use a catalog item to create SC Task and Request in HR Lifecycle event.

1. Navigate to your lifecycle event.

2. Click on Add New >> Employee Request.

3. Fill in the form as follows.

Here you can configure the fields according to your requirements. The Catalog item will be shown during the process and will trigger request when submitted.

Fore more information please refer to https://docs.servicenow.com/bundle/washingtondc-employee-service-management/page/product/human-resou...

Hope this helps.