Pre-requisites:
The required role privilege is 'Manage Workflow Rules' on the project where a system task needs to be created.
The steps to create a system task for clearing tasks on custom objects in a project are as mentioned below:
1. Follow the steps to create a system task for Custom Objects (steps 1 to 4).
2. In the task dropdown, select 'Clear Tasks'.
3. When you select the 'Clear Tasks' option, the page expands allowing you to choose the tasks to be cleared on the custom object.
4. Once done, click the 'Create' button to create a system task.
You can create independent system tasks which can be executed using workflow triggers without adding them to a complex workflow.
All system tasks are executed automatically according to the conditions outlined in the relevant workflow trigger. The related custom object audit history and task assignment details indicate that they were performed by the 'Workflow Agent'.
Related Articles: Create a System Task - Clearing File Tasks (in a Project), Create a System Task - Clearing Form Tasks (in a Project)