Single or Multi-member LLC

You may be confusing a limited liability company ("LLC") the ownership of which is divided among multiple people/entities and a LLC that has the ability to establish a series (e.g., child LLCs, each of which can singularly own each investment property). Indeed, the decision whether to create a LLC with multiple members is a bit self-determinative: do you have multiple "owners?" If so, you will have multiple members, which are somewhat analogous to partners in a partnership.