Pre-requisites:
Required role privilege 'Manage Workflow Rules' on the project where a system task needs to be created.
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 system task for Custom Objects (steps 1 to 4).
2. In the task dropdown, select 'Clear Tasks'.
3. Upon selecting 'Clear Tasks' option, the page expands and enables you to select the tasks to be cleared on the custom object.
4. Once done, click on 'Create' button to complete creating 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 performed by system automatically based on the condition defined in related workflow trigger. It appears in related custom object's audit history & task assignment emails as performed by 'Workflow Agent'.
Related Articles: Create a System Task - Clearing File Tasks (in a Project), Create a System Task - Clearing Form Tasks (in a Project)