Hi
Green up button places the closing bet for a trade with amount calculated to have an even profit across all selections.
Trade Out All button closes all open trades on all selections immediately, by either greening up a selection if possible, or distributing the loss on a selection.
Distribute Profit button, distributes the profit on a single selection equally across all selections. Used for example if you have a back and lay with same amount, i.e. a Freebet and profit only on that selection, you can even the profit out across all selections (greening-up the Freebet) using this button.