In time, girls press for action (3,2)
I believe the answer is:
egg on
'press for action' is the definition.
'egg on' can be an answer for 'press' (I've seen this before). I am not sure about the 'for action' bit.
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for egg on that I've seen before include "One cooking breakfast might have this" , "Press" , "Urge (someone) to take risks" , "Incite, encourage" , "Encourage to act" .)