do you mean in the area that says "place on market"

this allows you to take your resources and sell them for cheaper than market value, this would in theory undermine the market and cause a crash

The left set changes the percentage of the market value that you will accept (50% of 400 credits is 200 so you get 200 credits for 100 resources instead of 400)

The right set changes how much you are putting on the table at that price (ex. 2000 at 50% of market value)

Could you take a screenshot of this?

that would be the bounty sub-menu. Whoever's picture is up there is the person who is up for attack, the red bar is the timer, and the button will place bounty on someone who isn't allied to you.

That would be the mini-underground menu. The button automatically selects a player you do not have a Peace Treaty with that has the highest bounty of all the opposing players, or, when there is more than one player with the most bounty, it selects a random one out of those players.

Lol, out of the most used buttons on the UI is like the underground button rofl.