Chase with Delay on Step 1 and Last Step Pattern Examples and Possibilities
 
 
The numerals of the links below correlates to the number of tracks chasing. 
Both versions chase from Step 1 to the end after a 4X (Time) delay.
Sequence Diagram Version A
2 3 4 5 6 7 8
. Uses Track 7 and 8 if not being used to chase once.