If it's a newcomer's&,it's usually written in the middle, such as Zhang San&Li Si's wedding invitation. If there is a wedding planning, such as Zhang San&; For Li Si/Wang's wedding planning, you can write the planner's&for example, "Zhang San&Li Si/Wang's wedding planning" next to the submission.
It should be noted that both the name of the couple and the name of the wedding planner should be clear and easy to read to avoid ambiguity. At the same time, the size and font of the name should also be selected according to the overall design to ensure the overall beauty.