First of all, you have to build a bank. As soon as the bank starts working, you can press the
on a normal citizen. Then press
to change ledger. You will see a sign that has a hand and money. Similar to the achievment picture. Press
to bribe him. You will give him 1000$. Just repeat this 9 times with different citizens and achievement is unlocked.
NOTE: You can get a head start on this by using the bribe faction leaders edict. It counts as four or five bribes in one go. (Thanks to Dr.Jekl)