1954 235 z TDC question

This may sound elementary
If my pointer is on the ball and rotor pointing to number 1 wire
and both my pushrods are loose on # 1

Would that mean that #1 is on the compression stroke.

Or does that happen again in the cycle?



Second
Last time I did a compression check I only removed the spark plug on the cylinder I was testing. Is that correct or should I have them all removed ?


Thanks