Browsers/Mail :: How To Change Sync Information For Email And Calendar

I am extremely new to Windows 8. I was handed over a work computer today that runs Windows 8, the previous employee set everything up using her personal email information (IE: the email from the main email envelope is her email, and the calendar feature would add details to her personal calendar not the one for work). She is not set up as a user on the computer at all, but her personal details are linked into the system.

I have searched the documents everywhere and have gone through settings for the two applications trying to work out how to remove her personal information from the system and replace it with the work information. She doesn't need to see the new schedules or the times that our employees will be out on different jobs.

Is there a way for me to go in and remove her personal information and replace it with the information for the company? I could sit and question her ethic as an employee for hours as to why she would do it this way, but honestly if her ethic was great, I wouldn't be taking this over at this point. I just need to ensure that the computer is set up for the business not for someone's personal email and calendar and ensure she isn't getting notifications of our future work schedules.