Can I change default rights for new web users?

[meichr]

I am using PLESK 8.6 for Linux (Suse 10.2) and need to access the space of its webusers by using PHP on the main site.
For this reason I would like to have default rights of 770 instead of 750 with a newly created web user.

Is there a configuration file within PLESK where I could change the default rights given to a web user directory?

Thanks for any help.