There is only one bleeder on the trans line and it is the one pointing towards the front of the car in your pic above.
You bleed from the clutch master cylinder to the bleeder first using the same technique as the brakes. Once that is done, you need to pump and hold down the clutch pedal before opening the bleeder. When you crack the bleeder, the slave cylinder will push air to the bleeder from its end of the line. You must close the bleeder before releasing the clutch pedal. Continue doing this until there is no more air coming out from the slave cylinder side.
So, it's only the one bleeder screw you already identified and it's 2 different techniques to bleed from each side of that bleeder.
I followed Lonny's directions (linked in my response above) and it worked just fine.