I managed to use Puppet Enterprise to install updates on an Ubuntu Linux system. But I have also a Ubuntu Linux system with a MySQL-server. On this system beside other also MySQL-server updates are available. Because the MySQL-server is in use, all updates may be installed except the MYSQL server updates. The MySQL-server updates should be installed later. How to define which updates can be installed? In PATH MANAGEMENT/Patches, I see "Patch groups"? Should I use "Patch groups"? Where can I define "Patch groups"?