When adding a Speaker to an Event, the speaker details panel on the right is blank.
The Event Configuration for this Event does not contain an Event Rule of the Record Type Speaker_Fields_vod. The speaker Details Panel is configurable using an Event Rule of type Speaker_Fields_vod. All the data that displays is configured in the Speaker_Fields_vod field. When filters are applied, they are applied to the same Training and Services records that display in the UI on the Speaker Details panel.
The default value for this field is:
Create an Event Rule of the Speaker Fields Record Type. Modify the default value to hold the fields in the preferred order. After saving the Event Rule, refresh the metadata from the Event Configuration Console.
CRM Help Documentation: Speaker Management