(I'm the writer of Beginner, and most of intermediate)
Hey there! Phy's right, intermediate script and onwards goes into the multi-line onTick and onTouch fields. onTick is effectively a standard script field, with the script executed every frame, or every few frames, depending on the rate you set. onTouch is executed every frame, or rate frame, while the selected object is hitting another.
The important thing to note is that these fields are only visible with SP3 X, which you can find on the link under the 'What's new' section, on the main page of the wiki. Just install and go!
If by 'motion sequencing' you mean Chris' Knight Game animation system, that's very advanced. You may want to play around with more simple scripts before attempting something like that π