How to make NorgateData default source when AB starts

i've installed NorgateData besides an existing AB data (linked to Yahoo via AmiQuote. AB won't let me change the default data source on startup, as i used to have before. what should i do, please?

To change default database that gets loaded at startup,
please go to Tools->Preferences,
"Data" tab and press "Pick..." to select default database folder.

Alternatively, if you just want to make currently loaded
database the default one, just press "Current" button.