Reference and details below.

The administrator needs to add the custom object to the Timeline after deployment, then add it to the Timeline component. This will allow the custom object records to be displayed on the Enhanced Timeline2.

According to the Salesforce documentation, the following capabilities of the provider search would a customer service agent use to help payers find the right provider:
Control the list of fields displayed in the search panel and search results. The provider search allows customer service agents to customize which fields are displayed in the search panel and search results for different types of providers or facilities. This helps them find the most relevant information quickly and easily.
Use custom fields defined in healthcare provider and healthcare practitioner facility entities as part of the search provider. The provider search allows customer service agents to use custom fields defined in healthcare provider and healthcare practitioner facility entities as part of the search criteria or filters. This helps them narrow down their search results based on specific attributes or preferences.

According to the Salesforce documentation3, Practitioner Relationship is an object in Health Cloud that is used to track the relationship between a provider and another provider or a facility. Practitioner Relationship includes information such as the relationship type, start date, end date, and status. Practitioner Relationship can be used to help sales teams view all providers related to a specific facility3.

To enable care providers to conduct video visits with patients and capture socioeconomic factors that impact their care, a consultant should recommend the Telehealth capability in Health Cloud. Telehealth allows care providers to connect with patients through video calls, chat messages, and surveys within Health Cloud. Telehealth also enables care providers to collect and analyze social determinants of health (SDOH) data from patients using assessments and surveys3. Telehealth helps improve patient engagement, satisfaction, and outcomes by providing convenient and personalized care. Integrated Care Management, Intelligent Appointment Management, or Virtual Care are not capabilities that can fulfill this use case.