When OLS is opened, it will show the Effect Editor mode. The devices and settings should appear as your previous setting, or it will be a default arrangement. There are 3 main components in the Effects mode:

1. Layer Editor (left)

2. Zone Selection (middle)

3. Effect Editor (right)

From here, first create / select a layer for editing on the left, define the affected zone(s) in the center, and the specific effect you are looking for on the right.