When you first go in the Fitting room, load your clothing and load your figure as in my first screengrab, Mark the Checkbox "Display Weights" under the Dial.

All of the clothing should turn into "GREEN" dots, meaning that all of the clothing will be tightened completely.

Then open the Weightmap paint palette (the yellow box) in the screengrab.
Select the Substract tool, and "paint" => is removing weight for the tighten.

The GREEN will reduce to yellow-blue-red- and eventually dissapear completely.

That is the fall-off zone where you gradually reduce the "weight" of the tighten map, clearly visible in the middle of the dress.

In the second screengrab to show the result?

I unchecked the "Display weight" so that you could clearly see the result after the tightening.
Have a nice day.

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
"Do not drive faster then your angel can fly"!