I use WLS version 10.3.4.
I wondered if there was any way to change the default tab in the Servers Summary pane to the Control tab, rather than the much less used Configuration tab.
Would add just that tiny bit of quality to my life..
There seems to be no such customization option to drag and drop /alter the position of tabs or set the preferences of a specific tab to be shown up, when clicking on Servers option from the Admin console.
However you can work with Admin console extensions to alter the Tab structure. Please check the below document.