start the ball rolling

(verb) set an activity in motion, start an activity

Example Sentence:

I would like you to start the ball rolling on our project, Jenkins. Can you file that report?

My fiancee and I started the ball rolling on our wedding plans when we found a place to have our ceremony.

Similar idioms:

1. put something on the back burner
2. have a ball
3. behind the eight ball
4. drop the ball
5. start something from scratch
6. touch base
7. start off on the wrong foot
8. fall through