Hello
You need to enable AMD PBS menu in tour BIOS/UEFI, read >Here< and >here<.
Basically you need to:
1- Open you BIOS file with UEFITool.
2- Search CTRL-F for AMITSE module (GUID - B1DA0ADF)
3- Extract PE32 image as is and leave UEFITool open for later replacement.
4- Open the file extracted with Hex editor (Ex. HxD)
5- Search CTRL-F for 59 B9 63 B8 C6 0E 33 40 99 C1 8F D8 9F 04 02 22 (Reverse GUID of AMD PBS module) in Hex-Values
6- Replace for (Menu:Edit/Fill selection) 00 and save file.
7- In UEFITool replace as is the file saved in step 6 and save your BIOS file.
8- Flash modded BIOS file.
OK, this is the "normal" mod for unlocking PBS menu, but does not work on all BIOSES, on my X570 I can not find 59 B9 63 B8 C6 0E 33 40 99 C1 8F D8 9F 04 02 22 on the AMITSE module and I still trying to find/search a way to unlock the AMD PBS menu. Hope that works for you.