For those that are from the western region " Jeddah, Madinah, Makkah, and Taif, etc..." Aramco will book a return flight for them in groups in one flight "either Saudi airline or aramco airline" to Jeddah.
However, those that are not from the western region. They should book a return flight on their own account and ask for a refund.
You've the option to return on your own account & ask for a refund "If you like to return early".