You can create functional account groups to categorize your customers based on some common element such as geography, product, or channel. You can then choose to give your Customer Support Representatives access to specific functional account groups by assigning them the applicable user role.
In addition, you can sequentially number statements and/or credit memos for accounts within a functional account group, which may be legally required in certain jurisdictions. A functional account group in which statements or credit memos are sequentially numbered is called a sequence group.