How can I direct funds from my members into a Treasury account?

You can fund your Treasury accounts directly from member invoices to automatically deposit payments where they need to go. 

Under the Invoices module, click Create New Invoice.

Select the members who need to be invoiced from the list, and then select Add Charge.

Complete the charges information. Under the Deposit Financial Account section, you can select the appropriate Treasury account to deposit the payment for this charge.

Once the member completes their payment, funds will automatically be deposited into the selected Treasury account. 

See also: 

How do I create an invoice for members?

How do I edit a charge?