There are 4 text boxes horizontally placed. As soon as the user leaves the
last one, another set of 4 text boxes are created below the original 4 ...
and this continues.

That's how I was envisaging my user form, as I thought it would enhance the
usablity of the form. And in any case I don't know beforehand how many such
sets of text boxes the user will need. Now I'm disappointed to know dynamic
control creation isn't possible in hosted VBA. Is there any alternative way?

Thanks. ~Asif