Calling multiple instances of a single userform

Greetings All,

As a VBA novice I have played around and have successfully managed to select a date from a PopUpCalendar (MonthView Control) on the form and have the date placed in a textbox (txtBirthDate) located to the left of a command button

My question is this - I would like to reuse the same PopUpCalendar for other textboxes (there are two on this form) and have the result returned to the left of each respective textbox.

As you can see by the current form in the attached file, selecting the second calendar only serves to update the first textbox. I am not sure how to have the PopUpCalendar differentiate between textboxes. I would rather not create a new useform with a MonthView control to the side of each textbox as I believe this would be inefficient.

Any assistance is appreciated and thank you for your time.