Can someone please advise me on how to edit a tab, I realised I had made a slight error in one of my tabs, and after looking around I have not been able to find any information on how to do this.

Thanks in advance.
thanks for the help, unfortunetly I can't find this blue u!, it says tabs then the title of the tab and an A for approved.
Sorry, on the link i gave you, if you loook, the particular tab you are on is stats. The next one to the right is tabs. Click on that and the u! is in there