Don't worry guys i have figured it out.
For anyone else if they wish to achieve it:
in the 'product_info_tpl' file
there is an 'if / else' statement which checks what the admin settings are, if the admin is saying '0' quantity status (which means turn off the quantity box completely or max qty = 1) either of that case just show the 'add to cart' button only.
Else
show both qty and add to cart.
with that else statement copy the code given in if' statement and paste it and disable the already existing line.
and that will work fine, i can't think of any disadvantage as all other settings in admin will still work fine if you needed to apply anything else. All it is doing is hiding the qty box on the product main page and automatically picking up your minimum qty unit. Then when in the shopping cart page it does show qty box and if needed buyer can alter there.
Hope this helps, if i am in correct in my understanding i do request more experience zenners to comment please.
regards
mimran