what kind of clothing is this for? can you dry regular t-shirt, Polo's, pants, jeans and shorts on this setting? how long does it take? and if ur dryer only has high, Permanent press, and low, is the press a medium heat? i am trying to avoid shirking.......
Because your dryer only has only Permanent press, Medium heat and Low I would use the medium heat to avoid shrinking which is your concern. What I do to save on my electric bill and the ware of the cloths fabrics and shrinking is I have a garment hanger next to my dryer. When my clothes are hot and fluffy and still on the damp side I shake out the clothes and hang them on plastic hanger to finish drying. Then all I have to do is go hang them up and they come out without any wrinkles. Over 50 years of doing laundry. I hope I have been of some help.
Permanent press is a medium setting. You can use it any time you would use medium heat. I keep my dryer on the 'permanent press' setting, and only use 'high' for things like dog blankets that I don't care about.