Using VCC might be a better idea, there are no unitypackages in their offical web>﹏<
-You could go to this page: https://vrcfury.com/download to add VRCFury into VCC
-And go to "Manage Project", find "VRCFury" and add it into the project
-Open that project, at the top, go to "tools" -> "VRCFury" -> "SPS"
or
-After adding VRCFury into your project, download "sps configurator" for easy setups
-Full tutorial here: https://nyaamuko-wet-panty.hatenablog.jp/entry/2024/03/08/043210
Good luck and feel free to ask me (@^0^@)/