First add the object, and a window will pop up, or double click the object in the panel.
You then click the button at the bottom to "add period". Each period has a delay, and a start time, as well as with previous, and after. With will start as soon as the period above it is started. After will start after.
On the event sheet you trigger what period you want to start first and choose what you want to happen within the period.
This is just the basics, do a search in the forum, I think there is an example in uploads.
You may also want to check out the timer behavior.