Jira Automation - Setting Duedate when Field is Empty by issue creation

[Thomas S_]

Hello Community,

i have a problem with a rule that we want to implant. 
We want, that IF the duedate is EMPTY by creation of the issue, 5 Workdays from NOW is set by the automation Plugin. With that in place, another rule will pull all issues whom duedate is smaller than 3 workdays from the backlog to the input.

I hope you can help me.

Regards