There is one important thing to mention here: wear tight underwear if possible. The glue strip will help stop the pad from moving around, but it needs a secure base to attach to.
For men:Loose boxer shorts are not the best idea. Tighter boxer shorts will give the pad the support it needs.
For women:Standard knickers should usually be absolutely fine. The main goal is simply to make sure the pad has a snug, supportive base.
Placement is usually best a little further forward than people first expect, so the pad can better catch any leakage at the point it is most likely to happen.