On the left side the currently available Advantage bonuses for the race, culture or profession are shown. New bonuses can be created on the right. There you can select different Advantages from which the player can choose one. By clicking on accept a new bonus is created and added to the list on the left.
It the Advantage comes in different variants you can choose if the variant sould be changeable by the player. For example if the Advantage Connections is changeable the player can select to whom the hero is connected. In that case you would enter a description of the connection in the textfield, like 'someone for selling stolen goods'.