Yannick – if this is a multicultural group from “around the world” that don’t already know each other, then I wouldn’t consider using LSP in such a short time as 30 minutes. I believe it will be inevitably shallow, and potentially embarrassing, and undermine the value of the great work you could do if you were given adequate time.
However, if you have a group that has met and worked together before but never met LSP, then you can do something quite surprising in a short time which opens up questions about other ways they can use alternative communication and decision processes.
For short time, with small group, _if_ they have met each other OR there are not concerns about culture, language, spoken communication, then would use the ‘Explain This’ exercise but in an intense way: limited time, multiple “laps”, and on the final lap – also limited words to share the story: i.e. cut to the shortest, most accurate meaning they can without losing content.
In short – beware of doing things that undermine or undervalue you yourself, or LSP as a suite of methods.