Matomo install Script, no write permission

SYSTEM INFORMATION
OS type and version: REQUIRED

Debian 10
|Webmin version:|REQUIRED|
1.981
|Virtualmin version:|REQUIRED|
6.16pro
|Related products version:|RECOMMENDED|

When i install Matomo i got an Permissions Error.
Matomo needs www-data User and Group. I know the User is different for each domain with Virtualmin.
Where is the Script located? Can i change that for future use?

What script are you talking about?

The Matomo Script. I changed the Owner to www-data:xxxxxxx and it works now.