Pleat to the sett tutorial?

[Pleater]

to make box pleats you need to draw two tabs together and then have a space, two together and then a space, all across the back.

If the drawstring was threaded through two loops and tied in an overhand knot as required that might do the trick.

Anne the Pleater

[Luke MacGillie]

With the drawstring tied around the waist, you could then have your attendant set the pleats which ever style you wished prior to putting on the belt.

Same if you had belt loops sewn on the outside, vice a drawstring on the inside.