Candidates can be added to a talent pool from the following sources:
Candidate Workbench (Talent Pipeline page): You can manually add candidates to a talent pool from the Talent Pipeline page, which shows all the candidates who have applied to your jobs or have been sourced by you or your team12.
Auto-populate from a saved search: You can create a saved search based on certain criteria and assign it to a talent pool. This will automatically add any candidates who match the criteria to the talent pool13.
Add from a Candidate Search: You can perform a candidate search using keywords, filters, or Boolean operators and add the search results to a talent pool14.
You cannot add candidates to a talent pool from an email campaign or allow candidates to add themselves. Email campaigns are used to communicate with candidates who are already in a talent pool1 . Candidates can only join a talent community, which is a broader group of candidates who have expressed interest in your company, but not a specific job or talent pool1 . Reference: SAP SuccessFactors Recruiting: Candidate Experience Administration, Unit 5: Candidate Relationship Management, Lesson: Talent Pools, pages 5-3 to 5-9.

If a candidate tries to access a branded page that has not been built, the system will automatically redirect them to the page for the default brand. This is because the default brand is used as a fallback option when a specific brand is not available or configured. The default brand should have all the pages that are required for the candidate experience, such as the home page, the job search page, the job details page, etc. Reference: SAP SuccessFactors Recruiting: Candidate Experience Administration, Unit 4: Career Site Builder Global Settings and Global Styles, Lesson: Configuring Brands, Slide 9.

Conduct the job delivery intake meeting. This is the first step in the job delivery process, where you gather the customer's requirements and expectations for job distribution, such as the target job boards, the budget, the frequency, and the tracking methods1.
Create the customer's standard XML feeds. This is the second step in the job delivery process, where you configure the XML feeds that will deliver the jobs from the customer's SAP SuccessFactors Recruiting system to the selected job boards2. You can use the Job Delivery Toolkit to create and test the XML feeds3.
Train your customers how to populate their preferred sources in the Career Site Builder Site Source Editor. This is the final step in the job delivery process, where you teach the customers how to manage their preferred sources, such as job boards, social media, and employee referrals, in the Career Site Builder Site Source Editor4. This allows the customers to control which sources are displayed on their career site and how they are tracked.
Reference:
1: SAP SuccessFactors Recruiting: Candidate Experience Administration, Unit 8: Job Delivery, Lesson: Job Delivery Process Overview
2: SAP SuccessFactors Recruiting: Candidate Experience Administration, Unit 8: Job Delivery, Lesson: XML Feeds
3: SAP SuccessFactors Recruiting: Candidate Experience Administration, Unit 8: Job Delivery, Lesson: Job Delivery Toolkit
4: SAP SuccessFactors Recruiting: Candidate Experience Administration, Unit 8: Job Delivery, Lesson: Site Source Editor
[5]: SAP SuccessFactors Recruiting: Candidate Experience Administration, Unit 8: Job Delivery, Lesson: Preferred Sources

Some leading practices regarding the timing of the Advanced Analytics implementation are:
Even if Advanced Analytics is configured much later, Advanced Analytics reports contain data beginning when the Career Site Builder career site went live. This means that you do not lose any historical data if you delay the Advanced Analytics configuration1.
Implement Advanced Analytics immediately following the Career Site Builder site go-live. This helps you to monitor the performance and effectiveness of your career site and optimize it based on the insights from the reports2.
The fields the customer wishes to report on do NOT need to be considered until the Advanced Analytics implementation has begun. This is because the Advanced Analytics reports are based on the applicant status set, which is already defined in the Recruiting Management module. You do not need to create any custom fields or mappings for the Advanced Analytics reports3.
Reference:
SAP SuccessFactors Recruiting: Candidate Experience Administration, Unit 7: Implement Advanced Analytics, Lesson: Implementing Advanced Analytics, Slide 6 SAP SuccessFactors Recruiting: Candidate Experience Academy, Unit 7: Implement Advanced Analytics, Lesson: Implementing Advanced Analytics, Slide 7 SAP SuccessFactors Recruiting: Candidate Experience 2H/2023, Topic Areas: Implement Advanced Analytics <= 10%

Some key features of a fully hosted Career Site Builder (CSB) site are:
When a candidate visits a company's corporate site and clicks a link to view careers, they are directed to the CSB site. This will provide a seamless and branded experience for the candidates and allow them to explore the company's culture, values, and opportunities1.
All information regarding available jobs and additional information pertaining to employment are displayed in the CSB site. This will enable the candidates to find and apply for jobs that match their interests and qualifications, and also learn more about the company's benefits, diversity, and social responsibility2.
The other options are not valid features of a fully hosted CSB site:
When a candidate visits a company's corporate site and clicks a link to view careers, they are directed to an applicant tracking system. This will create a disjointed and unappealing experience for the candidates and may discourage them from applying or returning to the site3.
The customer maintains their own career site in addition to the CSB career site. This will create duplication and inconsistency of content and design, and also increase the maintenance and cost for the customer4.