Follow the precise instructions in the Patreon post. You should drag the tmex-BetterBuildBuy folder directly to your Mods folder. Do not put in a subfolder.
Download ts4script and package file directly to Mods folder.
Download package file directly to your Mods folder. Press Tilde (~) or 1 key in the number row to toggle expansion.
Download package file directly to your Mods folder. Use ctrl+C, ctrl+V to copy and paste.
Download ts4script file directly to Mods folder.
Download package file directly to your Mods folder. Use TAB to toggle camera.