Which of the following is NOT a customization option available in Epic Willow?

Manual patient record entry is the correct answer because it does not align with the standard functionalities that Epic Willow offers in terms of customization. Epic Willow primarily focuses on optimizing workflows through automation and predefined processes to ensure efficient and accurate management of medication treatment.

Customization options like user-defined medication scheduling, tailored order sets, and personalized reporting templates are designed to enhance user experience and adapt to specific clinical practices. These features allow healthcare providers to create tailored workflows and documents that cater to unique patient needs and institutional protocols. In contrast, manual patient record entry is not a customization option, as it actually represents a more traditional, less efficient way of handling patient data that Epic systems aim to improve upon through electronic medical records and other automated solutions. The emphasis in Epic Willow is to reduce manual input and improve accuracy and efficiency in patient care processes.