Websan talks EFT for Dynamics GP 2010.
I would add that it generally takes longer to get EFT info from your bank than it does to set it up.
EFT for Dynamics GP 2010 | WebSan Solutions Blog
Payables & ReceivablesMicrosoft & the GP EcosystemGP 2010
Archived post from 2013. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.