How would the cuttings that have been taken be placed in order to make a hedge, and would they be planted diagonally or vertically?
Certified GKH Gardening Expert
Vertically. This article will help with your cuttings: https://www.gardeningknowhow.com/ornamental/shrubs/holly/holly-cuttings.htm
Do not transplant them out until the cuttings have rooted. Hollies should be spaced 2-3 feet apart, depending on the variety used and overall size.