Configure XCTU send frames (UART)

Hello!

How can I send the data (via wireless) with a XBee SX868 that receives through its P4 (UART DIN pin)?

I would like to know how to configure the XCTU and the type of frame that I should use. I tried ‘0x10 Transmit Request’ frame but I don’t know how to send what I have in UART DIN pin (P4).

If it helps my XBee works in API mode 1.

Thank you!