By default, it is set to automatically recognize VIA, so the following steps can be performed when you receive the product and it is not automatically recognized or when you update the firmware.
Download the QMK Toolbox from the link above.
Galatea by Studio Kestra
studiokestra_galatea_rev1_via.hex
Download the file for the Galatea TKL PCB from the link above.
Each option uses the same file.
Run the downloaded QMK Toolbox and connect the PCB to your computer using a USB cable.
Press Open to open (O) the downloaded file (for each PCB name). Verify that the MCU dropbox selection in the upper right is ATmega32U4.
To upload the firmware, with the QMK Toolbox running, press and hold the reset button on the back of the PCB for about 5 seconds, then release it.