Account Lookup is a special web page in Customer's self-care UI that helps to find an Account by its name or other parameters. Page could be found under Customers - My Customers - Account Lookup

The tool can be used to search the whole hierarchy and find an account under sub-Customer as well. 

After finding an Account it's possible to navigate to the following pages:

* Login as an Account to open Account's self-care UI

* Authentication Rules of an Account in Customer's self-care UI

* Account Properties in Customer's self-care UI