Diversified adjusting is the standard manipulation people think of when they go to chiropractor. It is the "cracking." This helps to increase range of motion, increase proprioception, release endorphins (reducing pain), and relieve pressure off the nerves.
I frequently use diversified in the office, but each patient brings a unique set of circumstances with them and for some people this is not the best clinical fit for them. I also offer instrument assisted adjusting with an activator. It is an easy, gentle way of adjusting that allows me to mobilize the joints with minimal force. This works wonderfully for patients with contraindications to adjusting, osteoporotic patients, elderly, or patients who are simply uncomfortable with "cracking." I use Drop Technique as well, which allows you to use the table to help aid in the adjustment.