I saw an example sentence, which is
Staff members wear uniforms so that they are easy for customers to identify.
In my opinion, it is clearer if 'to identify' changes to 'to be identified'. I wonder which one is more natural or which one is wrong? It makes me confused.
If the written sentence is acceptable, what about this sentence, which is
Staff members were able to identify be customers easily.
Thank you for considering my request.