Almost all Chabad sidurim has a table in the beginning with the places of the tefila and where you can or can't respond amen, baruch hu uvaruch shmo etc depending on where you are in the prayer. Very useful when you get late for the tefila!!!
But i don't have a chabad sidur at home. Does someone have a similar table online or digitalized? I could't find it something like that searching in google!