# Accounts and Account Groups

The use cases presented here show you how to make the most of the available endpoints for accounts.

* **[Accounts and Account Groups](/products/tol/guides/accounts/accounts_overview)** 
Understand the roles of accounts and account groups and the relationship between them.
* [Account opening](/products/tol/guides/accounts/accounts_create_accounts)
Let us guide you through the process of creating accounts and account groups using our investment API.
* [Account closure](/products/tol/guides/accounts/accounts_close_accounts) 
Learn how to close accounts and account groups using our investment API.