The male partner could learn to gently explore different areas of the vagina to see where the woman has a strong response. He could then make short excursions away from that area to give it a chance to rest, then return to it for further stimulation. The woman could give him positive feedback on what makes her feel the best as they proceed slowly from one degree of pressure to the next, from one area to another. In this way, the man would know where the woman is most sensitive and discover how best to pleasure her. Each time the partners engage in a pleasure ceremony, it's important to discover what is really appealing to the woman at that moment.
Women are all different in wondrously unique and varied ways.
The same woman may even have different sensitivities within the same lovemaking session. It is important to know how her sensitivities are changing and shifting in small and subtle ways during a period of time. Men, being achievement and results-oriented, tend to want to find a formula that works and then stay with it. They feel good when they achieve results. If the man is familiar with several methods of stimulation and several areas in the woman's body where she often feels pleasure then he can go to one of those areas, manually stimulate it and see if it's sensitive at the moment.