OK, I thought it over and reconscidered it you can start working on adding all the episode quotes for each episode, that's a valid point you brought up about non-native speakers so you can go ahead and do that.
Ok, go under edit mode. See where it says insert? Choose parent tab template. Write the following given in these screenshots for height, color, and tab names. You can select preview to see what it'll look like.
Once it looks right pubish your edit. Tab 2 should be called Gallery.
Outside edit mode hit the gallery tab and you will get a new page called Page Name/Gallery which will be your new gallery page where you can add images.
Hi! Hmm I've just checked and that was right screenshot, sorry, (from s2 ep2, 11 min 30 sec on my copy). I'm trying to be helpful form Mother Russia ;-) please understand if I'm a tad, you know, foreigner.
What I mean is a screenshot from Yesterdayland does not belong under the subheader Amelia Earhart Story. Hope that helps. Edit: The only screenshots that should be added there are images with the character from that specific episode.