I would like to reorder the itemgroups under the home tab as well as reoder the tabs also. say for example: under the home tab few groups are available like (clipboard, Manage, Edit, Publish and etc..). Each group has its own buttons.

I have created few gui extensions buttons and i have assembled them under one group. by default gui extension is placed last under the given tab in the config file. 

I would like to place my extension group next to manage or edit group as well as i would like to re order the group.

Could anyone help me on this?