Truncate silence in reverse (add silence)

Hi, is there a way to essentially do what truncate silence does, but in reverse - to add silence as a percentage, to an audio file? I tried using truncate silence and setting the truncate silence % as higher than 100%, to achieve this, but audacity doesn’t allow values higher than 100%. Is there another Effect in audacity that can do this?

Best,
D

Nice thank you! I will check it out.