You can add new documents to the game from the Project View right clicking Create/Horror Engine/Document

https://lh4.googleusercontent.com/yJRbNOMPCju7R6NmbpgJldPILH88qCRkxHUo0661Gj2NEUnNpXYlkluPsAcjTzLk2ZuY8q_6bF308hX3W6ibdcV6lfIWqTjJ8wM2RRgvuO2qmb_SHrY0NfoC4ECe2oQb5JBhw51OkEEPWzVyn7NnC8mPmUzwLv0b7X1Be6jz_7B0Q7R9GpBwmmxJVA

On this new Scriptable Object you can set the different pages text and the different sounds used when it’s shown.

https://lh4.googleusercontent.com/TbYTj7_Jo3jUWa-YcYmjVaWUzOo3pSVyGCUn9I052aFNeJ_xAXUk01IwWgpPo05iBK_t20SOBr0MegK5Bcs7Iz544cVBwlNs53Kvp2crfZd2gh9jjuBnsUAAxzKa249-L_Fgbv_NYNcJD0H-bzjNvyWB8_kYWHSfUguUBiFzI7-L-wHAGdcQduDOGg

Similarly to adding item pickups, adding this document to the game is as simple as dropping the prefab PickupDocument into the level, located in HorrorEngine/Prefabs

Assign the DocumentData property on the PickupDocument component and add the desired model in a way that’s reasonably covered by the Interaction trigger. Optionally, save the new PickupDocument as a prefab variant.