I have just purchased Billing module for use with ISPConfig 3. I run a debian 9 system with LAMP In the documentation it says... Then upload the .zip file with the ISPConfig 3 Billing Module to the server (e.g. with WinSCP). For the following steps you need to be logged in as root user on the shell. when one logs into sftp as root i have any number of available directories...which one should i use for uploading/extracting the zip file can i just create a new directory in /usr/local/ispconfig/? (ie user/local/ispconfig/billing/ and extract the zip file into here)