Time that is right for a row (4)
I believe the answer is:
tier
'a row' is the definition.
(tier is a kind of row)
'time that is right' is the wordplay.
'time' becomes 'tie' (I can't explain this - if you can you should believe this answer much more).
'that is right' becomes 'r' (common abbreviation).
'tie'+'r'='TIER'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for tier that I've seen before include "one doing Bond" , "Level - layer" , "Row in theatre" , "Rank - order" , "he hasn't won?" .)