If you put a folder named UpdateUserFile in the Origin 2021 setup folder (with setup.exe or msi), it will be copied to the Origin 2021 install folder. When Origin 2021 runs, it is copied to the UFF folder.

If you put opx/opk containing like system variables, templates, fitting functions etc to a folder named Auto Install in the Origin 2021 setup folder (with setup.exe or msi), it will be copied to the Origin 2021 install folder. When Origin 2021 runs, the opx/opk can be auto installed.