Activity Saved Search Grouped by Types and Attendees in Columns

1. Navigate to List > Search > Saved Searches > New.
2. Select Activity.
3. Provide a title and set other search settings as needed.
4. Under Results tab insert the following:

Field	Summary Type	Formula	Custom Label	Summary Label
Assigned To	Group
Formula (Numeric)	Sum	DECODE({type},'Phone Call',1,0)	Phone Call	Phone Call
Formula (Numeric)	Sum	DECODE({type},'Event',1,0)	Event	Event
Formula (Numeric)	Sum	DECODE({type},'Task',1,0)	Task	Task

5. Click Save & Run.