How can you relate two Accounts together

How can you relate two Accounts together

On the Account form I wanted to place a Look Up field to select another Account "Parent Account".   This will establish a Parent/Child link between accounts.

When I place the Look Up field into the Account form, I don't have the option of selecting another Account form.

Is there a workaround for this kind of simple  Form A to Form A relationship?

Thanks,
Kurt