Hello,
One easy way of getting the date for eachtasks is by creating a date field for each task. Then create a field called current tast with a default value of "1". At the submit button, add an action rule which increments the current tast every time the form is submitted. This way, you will be able to determine which date field to update, therfore your incrementing action rule should be similar to this:
Increment Task Action rule:
Set Field: currentTask
to the value: currentTask + 1
After adding this logic, add an action for each task date field:
Ex.
condition: currentTask = 1
set Task1Date field to the function today()
where Task1Date is the field for the date for Task1
I hope this was clear enough. Please let us know how it goes.
Regards,