Option to transfer funds between linked accounts immediately

I'd like to transfer money from one account (business) to another account (personal) for my client, the same way it can be done on the CNB website. It should be as simple as:

Transfer from account: X

Transfer to account: X

Transfer amount: X

Transfer date: X

It seems AgilLink makes it too complicated and it takes too long for the money to show up when I have to send it as an ACH between accounts.