Thank you for your quick response and yes, data tags are working - all leader lines are showing, great.
Just one thing on that note, when I try to align those data tags, it seems that the objects themselves have moved to the new postion but the text hasn't... So I can select the data tags, highlighted with orange but the text is not inside the box...it remains in the old position but is no longer active. Does that make sense, what I am writing? Could this possibly relate to my Macbook?
Thank you again for your advice.