Rack was duplicated and re-ordered but data sheet claimed 3 more items than there were?
So emptied rack to see 'hidden' items but none there. Rack now empty but data sheet claims 3 items in it - rack is called B50 Rack Funny??

Your modules are on the far right side, scroll the page to the right.

Excellent! many thanks - not come across that before, thought they always 'snap' to the bottom. Great it's sorted cheers R