Depending on which tab of the Medical Records or Visit Editor screen that you have open, this window allows you to select the type of medical record entry, alert/reminder, or document to be created. Select the required one and press OK, else Cancel to abort.

For the Summary tab, the window is: (the partially visible last item is 'Weight')

For the Reminders and Alerts tab, the window is:

For the Documents tab, the window is: