Many thanks for that and sorry, I should have seen the phone setting in advanced.
I guess it would be nice to have a link in the tack which is tappable, but not shown in the task when in a list. At the moment it is either a big or small preview which can dominate a list or no tappable link at all when in the task itself.
Oh sorry, good point. It's all exactly as I want now. The only thing that would be good (and it is very picky!) is if there was a way to manage Maps links so that they do not dominate the task view in this scenario.