Default avatar in postbit

I searched, but the only thing I could find was the welcome panel. How do I set up a default, like the "no avatar selected" avatar to show up in the postbit?

[MindTrix]

<a href="https://vborg.vbsupport.ru/showthread.php?s=&threadid=32560" target="_blank">https://vborg.vbsupport.ru/showt...threadid=32560</a>

There you go mate

[Shell Geeks]

thanks, but that is for the forum home, i'm looking to put it in my postbit template within showthread.php

[MindTrix]

Couldnt you just search showthread.php for code that looks the same?