How can I have a text grid that also includes calendar dropdown?

please see the attached image.  our goal is to create a grid in which contractors can specificy the date, and client when they have delivered service.  in a perfect world the calendar column displays a drop down of a monthly calendar.  do please advise if there's a way to insert this into a form

You can configure this using our configurable list widget. Guide here: https://www.jotform.com/help/282-How-to-Set-Up-the-Configurable-List-Widget. 

The widget allows you to setup an unlimited number of rows, but if you want it to be fixed, just set the minimal and maximal rows to the same value.

Here's a demo form https://www.jotform.com/71636917370966.