Using ISO 8601 duration we can express a deadline of 7 days as "P7D".
We have extended the expressiveness of durations to support 7 workdays as "P7WD". As a workday excludes Saturday and Sunday the computation will be different.
If we execute Start on July 4th, 2022, we will get the 7 day deadline on July 11th and the 7 work day deadline on July 13th.
It is possible to extend the engine with a separate file containing other holidays. For details please contact DCR Solutions.