HELP.........install where?

We have our own server with Singlehop and host about 6 sites. I wanted to have piwik on only one site so do I install in that account directory such as standup/piwik or do I have to install in a new account on our server?

I created the database in my cpanel for the standup account, is that right too?

Thank you for your help with this.

Diana

Never mind…took 3 tries to get this to work. Next is getting data on the map