If Satan is not omnipresent, how can he tempt or test multiple people at the same time in different places?

Christian theology generally teaches that only God is omnipresent, while Satan is a created being with limited power and presence. Yet, believers around the world often experience temptations or trials that they attribute to Satan’s influence. How do Christian theologians explain Satan’s ability to seemingly affect or test many people in different locations at once, if he cannot be everywhere? - Does Scripture suggest he works through a network of demons? I’m asking specifically from a biblical and theological standpoint, not from personal opinion.