Substitution: user-exit ?

[Liczki, Ernest (CZ - Prague)]

Hi all,
 
I have a question concerning the standard Workflow substitution functionali=
ty - Personal substitutes:
 
Is there any user-exit possibility when the user assigns his substitute? Th=
e idea is to check whether the substitute has the required approval authori=
zations before defining him as a substitute. We will not prefer to build a =
custom application for this functionality therefore looking for possible co=
ntrol in the standard.
 
Thanks for help.
 
Ernest
 
 
This e-mail is intended solely for the addressee(s) and contains confidenti=
al information.=20
Unauthorised distribution, modification or disclosure of its contents is un=
lawful.=20
If you have received this e-mail in error, please notify the sender immedia=
tely by return e-mail.=20
Please then delete the e-mail from your system and do not copy it or disclo=
se its contents to any person.
Email transmission cannot be guaranteed to be secure or error free as infor=
mation could be intercepted,
corrupted, lost, destroyed, arrive late or incomplete, or contain viruses.=
 The sender therefore does not accept liability for any errors or omissions=
 in the contents of this=20
message which arise as a result of email transmission. Information, opinion=
s or conclusions=20
contained in this message that do not relate to the official business of th=
e sender's employer or=20
principal will be understood as neither given nor endorsed by it.