Workflow action: Traffic light (Date field completed or tickbox set)
Traffic light workflow actions allow you to block a progress button until certain criteria are met. This workflow action is identical to this one except that in this case you can block until a date type job has either been completed or marked as Not applicable.
Whilst the date field has not been completed or the Not applicable tickbox ticked, the progress button will be greyed out and a red message will direct the user to the field they need to complete.
You need to tweak a setting on a date type job field for the tickbox to appear, to do this follow these steps.