Hi there,
Yes, it is possible to customize a WinPE image following the same process as any other Windows image. In addition to customizations that are common to Windows and WinPE images, such as drivers and packages, WinPE also has some customizations specific to it.
WinPE: Mount and Customize https://learn.microsoft.com/en-us/windows-hardware/manufacture/desktop/winpe-mount-and-customize?view=windows-11
For boot images with other versions of WinPE, customize them by using another method. For example, use the Deployment Image Servicing and Management (DISM) command-line tool.
Customize boot images with Configuration Manager https://learn.microsoft.com/en-us/mem/configmgr/osd/get-started/customize-boot-images
Manage boot images with Configuration Manager https://learn.microsoft.com/en-us/mem/configmgr/osd/get-started/manage-boot-images#modify-a-boot-image
------------------------------------------------------------------------------------------------------------------------------------------------------
--If the reply is helpful, please Upvote and Accept it as an answer–