What is the ruling on appointing women mentioned to the company with the activities mentioned?

It is permissible for women to work in restaurants if no religious prohibitions result from it, such as immodest display (tabarruj), intermingling with men (ikhtilat), speaking in a soft alluring manner (khudu' bil-qawl), or temptation (fitna), because the default ruling for women's work is permissibility. However, if a religious prohibition does result from it, then it is not permissible to fulfill the condition because it is invalid, as the Prophet, peace and blessings be upon him, said: "Every condition not in the Book of Allah is invalid, even if it were a hundred conditions."