Thanks for your answer. I have currently a multi server setup with one ISP-Config. Your solution would mean that I have multiple ISPConfig setups, and admins in that.
I don't want them to meddle with the server settings, but would like to have them modify the apache and php fields for that website.
The other options don't need to be accessible to them.
The reason I am asking this is that I have mod_security installed on my servers, but WordPress doesn't work when all rules are active. Some rules have to be disabled for that Virtual Host.
Maybe an option can be added that if it is a WordPress site that the rules are default inserted in the apache conf?
And they need to modify the default php_maxpost size and upload size... So what they need is very limited..
I hope you can help me with this.