The ability to integrate your KBC account into Odoo may depend on a number of factors, including the specific version of Odoo you are using, the capabilities of the KBC API, and any third-party modules or apps that may be available for integration.

To start, you may want to check if KBC offers an API that allows for integration with third-party apps like Odoo. If so, you could look for an existing Odoo module or app that supports KBC integration, or consider developing your own custom integration using the KBC API documentation.

In terms of giving instructions to your bank through Odoo for payments, this may be possible if your bank supports payment initiation APIs like the SEPA Instant Credit Transfer (SCT Inst) scheme. With an appropriate API integration in place, you could potentially initiate payments from within Odoo and have them processed by your bank.

However, it's important to note that setting up a payment initiation API integration with your bank may involve additional fees and requirements, such as obtaining certain security certifications or meeting specific compliance requirements. It's recommended that you consult with your bank and/or a qualified software developer or consultant to determine the feasibility and costs of integrating payment initiation functionality into your Odoo system.