Add chicken broth and brown sugar to the bottom of a cold crockpot.
Unwrap ham and place face down onto the sugar. If your ham is too large for your crockpot like mine was, simply fit it into your crockpot as best as you can, trimming a little if necessary.
Cover and cook on low 6 hours or until hot all the way through and internal temperature reads 165 degrees F. Feel free to baste and brush on any desired glaze.
Notes
Since spiral ham is already cooked, you're simply gently reheating up to temperature in order to serve.