Using version 6 of the program, I need step-by-step information on how to join the s and the t with an arc on top of them to create a ligature. Thanks for your attention.
Please see this tutorial thread: Making ft and st Ligatures
If you’re using the Home Edition, this other tutorial thread has more detail on joining contours without the “Get union of contours” feature in the Pro Edition, which makes it so much quicker and easier.