Why aren't the calendar events entered on my S5 syncing with my Microsoft Exchange Calendar?

My Galaxy S5 is set up to synchronize with my Microsoft exchange server. Emails synchronize perfectly and calendar events entered on my Microsoft exchange account synchronize with my Galaxy S5. The problem is, calendar events entered on my Galaxy S5 do not synchronize to my Microsoft Exchange calendar.

I'm not sure why. Any assistance is appreciated?

That's a problem between Google Calendar and your Exchange server. Speak to the server admin for assistance.