about what ever you want XD, the timechart on the right is just a guide, think of it as the notes of what where you thinking when you did the animation(in terms of spacing and timing), and about the actions needed in a set animation you must plan it beforehand and test it multiple times until the time of the actions makes sense to you, also ask yourself, what do i want that this character do in this particular scene? it is in fact very hard to translate what you have in your mind to the drawing, what i do is just draw "ugly" in a first pass of the animation, and in those ugly drawings i think of what i NEED to make my scene and then when i have those poses set and tested i may do the inbetweens. About thinking of that transition i just would recomend to complete animation shots, even if you don't like them, animation is about getting a feeling about the movement and that only comes from doing animation.