Use extension points to call custom scripts.

1. Navigate to System Extension Points > Scripted Extension Points.
2. Click the desired extension point to view the record details. You can create multiple implementations for each extension point and assign an order number for each implementation. The implementation that has the lowest ordered applicable implementation is executed first.

   Extension point	Description
   global.ChannelUserProfileExtPoint	Use channel_user_id to find record to channel_user_profile user_table/user_document
   global.InteractionChannelUserProfileExtPoint	Defines how users are synchronized between the interaction and channel_user_profile tables
   global.AgentInitiatedConversationUtil	Get From and To options to show in UI for agent initiated conversations