I agree present has been picked up repeatedly (4,4)
I believe the answer is:
hear hear
'i agree' is the definition.
('hear hear' is said to indicate agreement)
'present has been picked up repeatedly' is the wordplay.
'present' becomes 'here' (both can mean in attendance).
'has been picked up' indicates a 'sounds like' (homophone) clue (to pick something up is to hear it).
'repeatedly' becomes 'hear' (I can't justify this - if you can you should believe this answer much more).
'here' sounds like 'hear'.
'hear'+'hear'='HEAR HEAR'
Can you help me to learn more?
(Other definitions for hear hear that I've seen before include "That's right" , "Listen, listen - it's approval" , "sound supportive" , "Jolly good!" , "Expression of agreement with something said" .)