In order to associate different files and directories with a management
class (to achieve varied retention periods) you must use an
include/exclude list and bind the non-default management classes to each
statement by including the name of the management class at the end of
the line. For instance,

Exclude /.../*
Include /test/.../* oneweekmgmtclass
Include /data/.../* onemonthmgmtclass

Etc.

Include / Exclude is your friend.

Kevin.