[otrs] change customer ID to first column and create a "Create" buttom at the top of right

Sorry for no subject name in initial email. Hello Everyone! I want to set the phone-ticket's first column is "customer ID" and change "customer ID" to "Mobile Phone". And make a new "Create" buttom at the top of right. I haved used much time to found that how to change above setting in admin sysconfig. Hope someone can help me. Thanks a lot. Best Regards, Sam Tse _________________________________________________________________