Complex sentence: Lego Serious Play, an official product of the Lego Group, is a form of business consultancy fostering creative thinking, in which team members build metaphors of their organisational identities and experiences using Lego bricks.
Split into simpler sentences: Lego Serious Play, an official product of the Lego Group, a form of business consultancy with the aim of fostering creative thinking. The objective is to have team members build metaphors of their organizational identities and experiences using Lego bricks.