R_R_T is an extension from Adobe for Premiere Pro that changes a setting within the application to resolve an issue encountered by some users. Its scope is narrow: Adobe's own guidance states that if you haven't been sent here by an Adobe employee, there's no need to install it. That makes it a targeted fix rather than a feature panel most editors would reach for on their own.
In version 2.0.0, the panel is visible and offers a button to toggle the state of the settings it controls. This gives users a direct way to switch that setting on or off from within Premiere Pro. The extension is compatible with Premiere Pro 14.0 and later, and this release is dated March 5, 2023.
Because it exists to address a specific problem flagged by Adobe, R_R_T is best approached under that guidance rather than as a general workflow add-on.