Just one. You can do it all by yourself. Put the corset on making sure it is centered hook the busk. The back modesty panel should not bunch. Now you are ready to start lacing. The laces of your corset are in X’s, like your sneaker laces. Alternating from the bottom then the top you will tighten those X’s until the laces are as tight as you want them to be, meeting in the middle. Now, holding a lace end in each hand pull snugly, wrap around and tie in a large bow in the back so no long tails are hanging below the bottom of the corset. With practice, it will get easier, especially after your corset is broken in. It just fits itself to you making the hooks snap together in the front and holding its place while you lace. Of course, there is nothing wrong with a little help when available and willing.