Take prompt action at some stage? (7,4,6)

'some stage?' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.

'take prompt action at' is the wordplay.
I cannot quite understand how this works, but
'take' could be 'r' (recipe is latin for take - r is abbreviation) and 'r' is located in the answer.
'action' could be 'esm' (ESM is an example) and 'esm' is found within the answer.
'at' could be 'on' (location) and 'on' is located in the answer.
This may be the basis of clue (or it may be nonsense).

Can you help me to learn more?