Overriding debconf priority for a single package

[Yannick Menager]

I've created a custom ubuntu iso including some extra software.

However, due to the nature of the whole package, there is some package 
configuration (slapd) that is at a low priority (and thus not 
displayed), that i would need to be displayed to the user.

However i don't want to lower the default priority for all package, 
since that would force the user to configure a whole bunch of other 
stuff for which the default would be fine.

Is there any way for me to indicate a specific package like openload 
should be run at a lower debconf priority ?