The Previous task field determines which task/s must be completed for a current task to be indicated as ready.
The resource assigned to the task can only start working on his task when it’s indicated as ready because only when the task is indicated as ready, meaning Previous task/s completed, all required assets, and OOONA tool in integrated systems, will be available for the resource.
The default Previous task is “Flow” meaning that only the actual previous task must be completed for the task to be indicated as ready.
The default “Flow” can be changed to any other task/s that are positioned before the task in the order’s workflow.
for example,
for the following “Final QC” task to be indicated as ready for the assigned resource, both QC and Final Proxy received tasks must be completed