If you need to make changes to the list of Subjects that pop-up when you click the + button on the Subject tab of the Data Entry module... this is the place to do it.

Just click on the header of the column in the display grid you want to search then use the Find box to jump down to the item.

Double Click on the Item to move to the Set Detail tab or just click the item in the list then navigate through the tabs using the shortcut keys (Alt and the underlined letter of the tab you want to jump to) or just click the tab with the mouse.