[Exim] quota?

Hello

Colleagues,
I'm trying to use quota option to limit users mailbox.
As I understand from documentation,
this is options of appendfile drivers.
Where in configuration file I have to write this options?
In section about TRANSPORTS CONFIGURATION ?

Thank you for advance.
-- 
With best regards.
------------------------------------------------------------------
Sergey Artjushkin                      Network Operation Center
   (SKIV-RIPE)                               ISP "CARAVAN"