The steps for Electronic Bank Statement are the same except for couple of more additional steps which you will see down below.
Step1: Create account symbols for the main bank and the sub accounts.
Step2: Assign accounts to account symbols.
Step3: Create keys for posting rules.
Step4: Define posting rules.
Step5: Create transaction type.
Step6: Assign external transaction type to posting rules.
Step7: Assign Bank accounts to Transaction types.