Some people can control when they cum, both men and women.
Get to know your body, become familiar with edging and what brings you back from the edge. Your pelvic floor muscles play a large role in being able to control your orgasm.
If you can’t figure out how to do it through practicing edging, doing kegel exercises can help. It’s not a necessary component, but these exercises will both familiarize yourself with these muscles if you aren’t used to controlling them and make them stronger (the latter is mostly helpful if yours are weakened from age, surgery or poor physical health).
The most common issue people have is not knowing how to control their pelvic floor muscles.