Creates an automatic short-term continuing appropriation that kicks in when regular annual appropriations lapse so covered Federal programs, projects, and activities can keep operating for limited periods. The rule provides an initial 14-calendar-day funding window (renewable in 14-day increments), places limits on how those temporary funds may be used or transferred, requires agencies to charge spending to the correct accounts once new appropriations are enacted, and spells out exceptions and procedural safeguards. It also instructs budget scoring offices to treat these automatic resources as discretionary for baseline and limit purposes and takes effect on September 30, 2025.