Considerations for Customizing Activity Timeline Fields | Salesforce
Considerations for Customizing Activity Timeline Fields
You can use compact layouts to customize the display and order of fields for items in the activity timeline. Be aware that certain essential fields remain in the timeline even if you delete them from a layout. Icons in the timeline aren’t customizable.
Available in Lightning Experience in: Professional, Enterprise, Performance, Unlimited, and Developer Editions
Display and Order of Fields
Use compact layouts to customize the display and order of fields in the timeline. However, certain fields remain in the timeline even if you remove them from the layout, because they contain essential activity information. For example, suppose that you remove the due date, the date and time, or the task status fields from the compact layouts. The event start date and time, the task checkbox, the task due date, and the call logging date still appear on activities in the timeline. The description field on events and the comments field on tasks also always appear in the timeline, although they aren’t available in the compact layout. The remaining fields visible in the timeline reflect the fields you include in the compact layout.
The icons for activity types (events, tasks, calls, and email) in the timeline aren’t customizable.