Resolved Installing Drupal modules go into wrong directory

[TomP]

I'm testing out how well Plesk does with installing Drupal, and I thought it looked like it would be a breeze. That is until I tried to log into my installed site, and add a new module. I found that the new module was installed into the drupal default modules directory, not the /sites/all/modules like I wanted.
Is this a problem due to the Plesk install, or am I missing something in my Drupal setup I have never needed to know before?

 

[Bitpalast]

It's gotta be a Drupal thing, because Plesk is not interfering with internal website configuration at all.