Installing Acrobat DC Pro on multi-user computers

Hi there.  I have a number of users that have AcrobatDC Pro License, but some of them share machines with other AD users that do not have license.  The users without license cannot use IE11 add-ins for reader, which they need to have access to for their daily activities (must use IE).  I have gone through the settings and set all defaults back to Acrobat Reader for those users but the problem remains.  How can I resolve this without having them sign up for a non-work account or uninstalling Pro?