Step 1: Navigate to http://findtime.microsoft.com
Step 2: Click "Install" and sign in using your email credentials when prompted.
Step 3: Restart Outlook and then select "New Email"
Step 4: Select "Apps for Office", select FindTime, and click start.
Step 5: A sidebar will now open in your New Email window; Select Link now and Sign In again with your email credentials in the window that pops up.