The Activity Feed widget depends on several CRM entities being added to The Portal Connector. If you are only intending on using the Activity Feed without any ability to add or edit activities, the only required entity is Activity (activitypointer).
If you intend to allow adding and/or activities, you may need to add the following entities depending on which ones you want to add/edit:
- Phone Call
In addition to the above list, you may need to add any custom activity type entities you want to support. Custom activity entities are fully supported.