Two way google calendar Sync
It is important to be able to have in real time the availability of each technician, at the same time see if there is any way that when the repair is completed, an update is made in the calendar leaving that time available, many cases that the repairs end before promised time and google that time is not available.
lewis hamilton commented
Click Settings and choose the Calendar tab.
Click the Sharing link and input the email address of your main calendar.
Choose Modify to allow your main account to add and remove appointments.
Log in to your main calendar.