If you want to share your calender with your company, so that your colleagues can see if you're busy or not, just follow this instructions!
Step A: Change to calendar (1) bottom left
Step B: Click on "Share calendar" (2) and select the calendar you want to share from the upcoming dropdown menu.
Step C: Now you can ajust (3), what your colleagues can see, if they look into your calendar.
Confirm with "OK"!
DONE!