How to support multiple I2C slaves in the RL78/L12 MCU?

I am trying to use the RF10RGA MCU to develop a LCD/Keypad application, it need 2 I2C slaves accordingly for keyPad and LCD controller.

I used the CS+ to generate the code, but it only could support one I2C configuration.

How should I do? I there any reference code for this?

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