Your comments

Multiple select is very useful when there are really a lot of tabs to rearrange.

To select these tabs in the Chrome Tab Strip is not a very useful tip, because in the case of a great number of tabs the labels on the tabs disappear. Actually this is the reason why I was looking for a tab organizer.

To implement the 'multiple select' feature can't be so time consuming that there is no reaction over the last 3 years anymore to this wish.

So helpful this extension is so annoying is it that this feature wish is totally ignored. If it would be at least implemented in the pro version I would pay for it. But it seems that the programmer does not support this extension any more. What a pitty