Not the best photos, but hopefully you get the idea. The bottom 'pivot' is a clevis fork that's been bolted through a spare hole in the bell housing. The bar pivots on that, and as you press the clutch is moves the rod, which pushes the bar out. Just below is a bar that's connected to the clutch release arm and that gets pulled out to release the clutch.
Three adjustment points - clevis fork at the pedal, clevis fork at the end of the bar, and clevis fork on the clutch release arm bar.