Yes thats it, how do you do that?....all with the play memories app?
First you need to create a WIFI connexion between the tablet and the camera. How you do that depends on your tablet model. With Sony own tablet you can use the near field connector (NFC) and that makes thing a little easier. With the iPad things are a little more complicated but it works well once that is set.
Then you need to get one of the Sony apps. The one you want is named "Smart Remote Control".
To set the WIFI connexion, read that part of the manual :
Help Guide | Using Wi-Fi functions
To install and use the apps, read this part of the manual :
Help Guide | Adding applications to the product
Or download the pdf version and read page 73 to 81 :
http://pdf.crse.com/manuals/4478729112.pdf
Note that if you want to control the camera from the tablet and focus from the tablet, you need to set the option "AF with shutter" to on. If like me you keep AF off the shutter button and prefer using the back button to focus, then, each time you use the tablet you need to dig into the menu to change that option (noway to make this option accessible through the Fn button pannel).
Also if you shoot raw or raw plus jpeg, you may be surprised that the apps doesn't respect that setting. You have to set it from inside the app if you want it; the default is set to jpeg only and no raw will be saved on your card. What you have selected outside the app is separate. I was caught again to-day. Not sure why it changed.
Then you can play. It works. You can even play some mirrors games :
(if the image doesn't show up, follow that link :
https://onedrive.live.com/redir?resid=820DEDA377597547!4440&authkey=!AMSxhYbQK8Rp3fY&v=3&ithint=photo%2cjpg