Synchronizing witz Google Drive

Sorry for my English. But you will understand my problem, I'm sure:

I want to synchronize my PIM data (on the PC, the smartphone, and the
tablet computer, the latter two are Android-driven) using Google Drive as
this appears to me the most simple method. Therewith I may be wrong but
this is not what I want to discuss about.

The PC and Google Drive already cooperate perfectly. Alle data I wanted to
upload are in the cloud. But to make them available for the phone, and the
tablet they have to be marked sharable. I couldn't find a menu item or
something similar to achieve this.

Can somebody help, please? 

Tschüs!
Arnulf

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Schwächen, die Bibel eine Sammlung ehrwürdiger, aber doch reichlich
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Albert Einstein