With big growth of computers with Windows 8.1 population which are usually 64-bit and home computers (with connected printers) are still 32-bit companies as well as home users are facing with issues related to printer sharing. When you install printer on the computer driver specific for appropriate bitlevel is installed for this printer.
When you share your printer in mixed environment and would like to not bother your user (mother, sister) with looking for a correct driver and installing it on different type of operating system or bitlevel, you can prepare these drivers on the computer which you share the printer from. During connecting this remote printer drivers will be installed automatically for your user.
a. On the page where you enable sharing click on Additional drivers button
b. Select the second bitlevel than bitlevel of your computer is
c. Windows asking for a path where you have drivers downloaded are opened.
d. After installation of drivers your printer is prepared to be connected from 32-bit or 64-bit system without asking user to use alternative drivers