Nope. Hyperactivity is not a necessary symptom for A.D.D. But this is a very common misconception. Without hyperactivity, patients have a tendency to never get a diagnosis until sometimes even in their fifties, they start wondering why they are still chaotic, unorganized, can't seem to get their social skills in order or other seemingly unrelated stuff.

Turns out, when somebody has diagnoseable ADHD, then the corresponding treatment options apply. And there's not a thing they can do to solve their problems which is more effective than treating ADHD according to well-proven guidelines.

I can recommend "Pay Attention! ADHD through the lifetime" from Coursera. That MOOC goes into quite some detail about how ADHD affects people.