A bank account is required to accept customer payments and pay taxes. It is allowed to use a personal bank account, it is not necessary for you to use a dedicated account or a business account.
You can set up more than one bank account for paying your invoices.
How to add more than one account? Login > Banking > Click on the Bank symbol > Enter your IBAN
To select a different account you will need to do so when issuing the invoice from New invoice > Bank account.
To carry out your business, you will not need to have an Italian bank account, however, to be able to pay taxes, you will need to have a bank account enabled for payment of the F24 form. Before deciding whether to open a new bank account for your business, make sure that the bank you choose has this service among those provided.