Made caseless demo version with add-activity block

config/optional/core.entity_view_display.oc_activity.interview.default.yml

@@ -0,0 +1,58 @@
+uuid: a696fdb4-5317-4bfa-ac92-c15b09c3a7d2
+langcode: en
+status: true
+dependencies:
+  config:
+    - opencase_entities.oc_activity_type.interview
+  module:
+    - datetime
+id: oc_activity.interview.default
+targetEntityType: oc_activity
+bundle: interview
+mode: default
+content:
+  activity_date_time:
+    type: datetime_default
+    label: above
+    settings:
+      timezone_override: ''
+      format_type: medium
+    third_party_settings: {  }
+    weight: 0
+    region: content
+  description:
+    type: basic_string
+    label: above
+    settings: {  }
+    third_party_settings: {  }
+    weight: 4
+    region: content
+  name:
+    type: string
+    label: above
+    settings:
+      link_to_entity: false
+    third_party_settings: {  }
+    weight: 3
+    region: content
+  oc_provider:
+    type: entity_reference_label
+    label: above
+    settings:
+      link: true
+    third_party_settings: {  }
+    weight: 2
+    region: content
+  oc_target:
+    type: entity_reference_label
+    label: above
+    settings:
+      link: true
+    third_party_settings: {  }
+    weight: 1
+    region: content
+hidden:
+  search_api_excerpt: true
+  status: true
+  time_taken: true
+  user_id: true