Adding a task in another calendar OAuth 2.0?

Hi all. The internal portal. The portal has a calendar (each employee) with the task. The goal is to sync this calendar with mobile devices (android, iphone).

For sync, I understand it's very nice to me Google Calendar.

Just need to get into g-employee's calendar and distribute it to events from the portal.

Started to understand with authorization, register here, created a project. even managed to connect to it from java code (using json files).

And then suddenly discovered that the same guys are not calendars of employees, I understand I have connected to my calendar.

It turns out that each employee will have to register on this page (this very difficult) and throw me a json file. This option is very difficult, whether it is Possible to simplify this?
October 3rd 19 at 03:43

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