Calendar Only Shows Available Dates

Good Morning, I recently built an appointment scheduling form with Formidable Pro. It turned out great and even has a dynamic recipient feature that's updated based on the drop-down menu selection. This new form has been so successful that it's getting a lot of use and submissions which leads to the problem. I currently have preferred date and alternate date fields setup on the form and I've set it up so Saturday's and Sunday's aren't available for selection. We have someone that handles the appointments for each one of the drop-down menu selections so each of these people's availability is often limited. What would be ideal is to find a way for Formidable Pro to enable or disable calendar dates on the datepicker based on the Outlook calendar of the person they are wanting to meet with (the selection they chose for interested in drop-down). I understand that is a tall order and solutions that integrate with Outlook/Exchange don't seem readily available. At any rate, I'd greatly appreciate any tips or suggestions that would accommodate my request for better availability controls on the calendar. Thanks!