Some effects come in from a certain direction. For example, the Wipe effect moves from left to right. When it is applied, the Direction list becomes available with other options for the direction.
Speed choices range from Very Slow to Very Fast. You can build in slight delays, if you want, between effects that you have starting at the same time if you make one of them Fast and one of them Medium. You'll see an example of this in the next lesson's practice.