Easily done,,,,,,,,,just remember, seeds take from 4-5 weeks to mature properly after pollen application, so either pick the lowest most immature flowers to pollinate.... this way you can harvest the top, unseeded portion of the plant first and then leave the lower section to finish the seed maturation..........or keep the pollen for your next grow.
This is easy to do, just seperate out the pollen from the plant material, let it dry for 7-10 days then store in a sealed jar in a cool and dark place and it will keep for many months.
Do not store the pollen in the fridge, this can reduce its effectiveness dramatically in my experience.
Applying the pollen using a very small paintbrush to the earliest flowers with fresh, new white pistils is best, just a few pollinated flowers can provide 100s of seeds if done correctly.
If you live in a mild climate, letting your male flower outside could be another option, they don't need much heat or light to produce viable flowers and lots of pollen.