''Je crois que le modèle que nous imaginions, où les gens travaillaient de chez eux, s'est concrétisé.''
For example, in the sentence above, 'où' does not mean 'when' or 'where'; rather, it is used to describe the 'modèle', which is not a time or place. Why is the use of 'où' still correct?
Thank you.