If the app is a cocoa app, then right click - show packages contents - contents and open info.plist.
Then add the following:
<key>LSUIElement</key>
<string>1</string>
If the app is a cocoa app, then right click - show packages contents - contents and open info.plist.
Then add the following:
<key>LSUIElement</key>
<string>1</string>