Can I make changes in Google AdWords interface within the campaign I created in BlueWinston?

Yes, sure. Almost all changes are reflected back to BlueWinston.com. Some features are currently available only at your Google Ads account, such as ad extensions for phones, links, adding of a new unique key word or pausing selected key words or ad groups. Read more about labels and controllers used by BlueWinston in your AdWords account.