How often does backlog grooming occur?

Related questions

1. Does scrum master need to be technical?
2. What are Scrum anti patterns?
3. What is typically included in the definition of done?
4. What is the 5 Whys tool?
5. When was the scrum guide written?
6. What are the 5 W's in writing?
7. How are the 5 Whys used?
8. Who is chicken in Scrum?
9. What is difference between TDD and BDD?
10. What is not a scrum artifact?

Tags

1. #frantically
2. #three
3. #there
4. #backlog
5. #often
6. #always
7. #grooming
8. #almost
9. #happens
10. #someone
11. #before
12. #product
13. #sprint