TaskRay comes with an optional validation rule that can be turned on to prevent the completion of a task until all of its dependent predecessor tasks are complete. Dependencies must be enabled in order for the validation rule to work.
With the rule activated, users will not be able to finish a task before all dependent predecessor tasks are completed (moved to the Finished column). To learn more about establishing dependency relationships between tasks, see this article on multiple dependencies.
Prevent the Completion of a Task when its Predecessor is Incomplete [Admin]
- From Setup, navigate to:
- Lightning: Objects and Fields | Object Manager.
- Classic: Create | Objects.