@ghirahim Hi!
A tab island is created itself - effortlessly. Yes, you need to browse in a pattern when you, for example, scan a news page and open a couple of articles in new tabs to read one by one, or you search in Google and you open several results in new tabs. We learnt from our research that this is a very popular behaviour amongst users.
Drag and drop to create an island it's a smooth way to create such a new group of tabs - we're working on it.