You cant. That feature doesn't work and it hasn't worked for a while now. The only way to use geotagged photos is to take the photo with the app which makes this feature practically useless.
This may have been beaten to death already, but does anyone know WHY they disabled the original geotagging feature, or if it will ever be enabled again? You're right, the newer 'dumbed down' feature is pretty much uselss. To some it may have seemed little more than a novelty, but being able to have all your camera roll geotagged (or receive geotagged photos via text or e-mail) was pretty amazing and extremely useful... for example, a friend sent an iphone photo from a great photography site he found. It was off the main roads with no address. He sends the photo to my iphone, I save it as a contact and the AVIC routes me there to do a shoot. So simple.
Unfortunately, now I have to open the AVIC Feeds app to take a geotagged photo, which I never remember to do... I wish I could downgrade that app.