What you need to do is set up the tablet as you the owner.
Example:
We have to Nexus7 tablets in the house and this is how I set it up.
My Nexus 7 I'm the only user with my gmail and wallet account.
My wife's Nexus 7 has two users, me the owner with my gmail and wallet account and her as the second user with just a gmail account so she can receive her own mail, because her tablet is used at times by our two granddaughters I put a password on the play store on her tablet, all app purchases are done either using my tablet or my PC at the Google play store, once I buy an app it asks me what tablet to download, once that app is paid for I can also send it to the other tablet because it is own by the account.
On her tablet she can get free apps and will not ask her for a password, my portion of her tablet is clean, no apps, no widgets just empty, the gmail in her tablet only checks her gmail account, her calendar is also independent of mine although we share the calendar so anything I add on mine shows up on her calendar widget and vice versa so we know what each other has on the agenda.
Hope this answer your question.
Sent from planet earth