Tab Bar position

I am trying to do is first change the position of the tab buttons in my tab bar. I tried to put them lower down the tab bar but it just stays at the top. I tried top and labelXOffset, labelYOffset
but none of that helped me.

Also I want to create the tab bar in one file and just include that file where I want it to show up instead of always having to write the code out in each file.

This is how I am trying to include the file system.pathForFile(tabBar)

Any help on any of these problems ?