What is the duty of one who has committed adultery with people without their knowledge while they were asleep, and what is the way to be absolved of this sin, and what is the path to salvation and returning to Allah?

Regarding the answer to your question, please refer to the following fatwas: 65262, 73059, 69834, 71813, 67382, 64050, 63790, 63511, 54343. Conceal your sin, and make sure to seek forgiveness from your colleagues in general terms without explicitly disclosing to them what you did.