Calendar Option Help for Employee Vacation Timesheet

Hello everyone! I am in the process of creating a time sheet that calculates each employees' earned vacation time based on their employment start date, and tracks how much vacation time they have used for that year. Here is where I need some help: I would like to insert a calendar function where we can mark/highlight days of the year that they took off, adding the dates in a separate cell for record keeping as the year resets. I have tried creating a Macro calendar a few times, but my computer does not have the "CalendarMaker" or "MicrosoftMonthView". I have tried downloading and installing the latest updates for it, but still no luck. I would appreciate any help or advice!

~Caitlin

To my knowledge, this functionality has been removed from Excel2010.