Yes you can have multiple sidebarTabs in one sidebar.
All you have to do is:
1. Drag more than 1 sidebarTabs widgets onto your sideBar.
2. under each widget, specify “Orders sidebarTabs” according to the order of tabs your have created in the sidebarTabs settings.
For example, for sidebarTabs 1, you can specify 1,2 while sidebartTabs 2, you specify 3,4.
Of course in the sidebarTabs settings/options, you need to order the tabs according.