How can i create an Audio series?

[Saif_and_Sound]

I'm fairly new to Literotica (at least at posting) and i cant seem to be able to find a way to create an audio series though i see that other authors have them up. the only option i have is story series and i cant add audios to that. I assume its something obvious i'm missing but i've been coming back to it and cant seem to see anything. thank you in advance!