In theory, just turn on XMP and that should be it. If you do need to try a bit of manual tweaking, Nate152 just posted a response to my question about memory overclocking here:
https://rog.asus.com/forum/showthread.php?131709-Basic-RAM-Overclock-Advice-PleaseI haven't needed to make any adjustments at all luckily, XMP just works fine for me, but I do have slower memory anyway. I was asking about memory overclocking beyond XMP, but I think that Nate's advice showing the main settings that can be changed might be very useful if you do need to make any adjustments.
Z690 Hero, 12900K, BIOS 4001, MEI 2433.6.3.0, ME Firmware 16.1.32.2473, 7000X Case, RM1000x PSU, ASUS TUF OC 3090TI, 2 x 16GB Corsair RAM @ 5200MHz, Windows 11 Pro 23H2, Corsair H150i Elite AIO, 4x Corsair RGB fans, 3x M.2 NVME drives, 2x SATA SSDs, 2x SATA HDs.