substitution and inbox configuration

[Lauri Eskola]

Hello!
 
I have two questions that I have been trying to answer with little luck, =
and would much appreciate your expert opinion. We are operating on =
release 4.5B.
 
1) Is it possible to maintain substitution centrally by e.g. an =
administrator? We are about to implement a large-scale approval workflow =
and need a possibility for an admin. to set e.g. user B to act as user =
A's substitute during absence. I am afraid all our users will not =
remember to do this by themselves via web interface we have built.
 
2) It is quite convenient to make different private configurations for =
inbox view via Settings -> Select columns. Is it possible to create a =
common configuration that would be available for all selected users?
 
Thanks in advance!
 
Br, Lauri