Hey @APSC your Slido event can last up to one year, and codes are unique for the dates when event is happening, so if you choose some code, it’s not possible for anyone else to use it if you have event happening in that date and you already created it.

Hope this helps, if you need anything else, please let us know wither here or via chat on slido.com or send us an email to support@slido.com.

We’re happy to help!