Those who do this make a row (6)

'those who do this' is the definition.
The definition suggests a singular noun which matches the answer.

'a row' is the wordplay.
I cannot really understand how this works, but
'row' could be 'line' (as in a row of things) and 'line' is present in the answer.
The remaining letters 'up' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...

'make' is the link.

Can you help me to learn more?