How can I activate a function in CameraModule?

So at certain point of a game I wanna make the player have like shift lock on while he doesn’t, making his character move same direction as the camera while I know how to do this from editing the camera module I wanna see if I can activate it manually from any point through the game. Heres the code inside of the CameraModule I wanna activate

function CameraModule:Update(dt)
	if self.activeCameraController then
		if FFlagUserCameraToggle then
			self.activeCameraController:UpdateMouseBehavior()
		end
		
		local newCameraCFrame, newCameraFocus = self.activeCameraController:Update(dt)
		self.activeCameraController:ApplyVRTransform()
		if self.activeOcclusionModule then
			newCameraCFrame, newCameraFocus = self.activeOcclusionModule:Update(dt, newCameraCFrame, newCameraFocus)
		end
		
		-- Here is where the new CFrame and Focus are set for this render frame
		game.Workspace.CurrentCamera.CFrame = newCameraCFrame
		game.Workspace.CurrentCamera.Focus = newCameraFocus
		
		-- Update to character local transparency as needed based on camera-to-subject distance
		if self.activeTransparencyController then
			self.activeTransparencyController:Update()
		end
		
		if FFlagUserCameraInputRefactor and CameraInput.getInputEnabled() then
			CameraInput.resetInputForFrameEnd()
		end
	end
	self.activeCameraController:SetIsMouseLocked(true)
end