IVR enable direct dial to go straight to voicemail

Running FreePBX 13 I know that in IVR module I can enable direct dial for callers to dial extension. Using our after hours IVR I would like customers direct dial extension and go straight to voicemail without any ringing. On my old PBX system I was able to enter prefix “*” for direct dial option to accomplish this. I’m not finding anything that would allow me to do this in FreePBX.

I tried doing this myself just now. I created a directory with all extensions, and then tried to edit the extensions to have a * in front, but apparently, when the IVR module interacts with a directory, it only cares about the dialed number, thus the caller would have to enter e.g. *1234 to match the modified directory entry. Seems silly.