Finger in the pie.
Finger in the pie.
Having a 'finger in the pie' means to be involved in a wide array of activities, often meddling or influencing many different projects or situations simultaneously. It comes from the image of literally putting your finger into a pie, suggesting an intrusive or participatory action in various matters.
Mary has a finger in the pie of every major project at the company.
Mary is involved in every major project at the company.
If you ask Tom about the event plans, you'll find he has a finger in the pie.
If you ask Tom about the plans, you'll find he's involved.
Being heavily involved in many activities, she certainly has a finger in the pie.
She is heavily involved in many activities.