Explanation
When a business analyst discovers that different teams have different needs or preferences for using Salesforce fields, they should refine the requirements to accommodate both teams. This is because deleting fields that are actively used by another team could cause data loss, errors, or inefficiencies in their processes. The business analyst should work with both teams to understand their use cases, data models, workflows, reports, dashboards, integrations, security settings, etc., and find ways to customize Salesforce fields that meet both teams' needs without compromising data quality or performance. References:
https://trailhead.salesforce.com/content/learn/modules/salesforce-business-analyst-certification-prep/requirement

The best way for a business analyst to help the team work together more effectively is to lead them in creating a team agreement that assigns project roles and outlines how the team will collaborate, disagree, develop trust, and define success. This will help them align on common goals, expectations, and norms, and resolve any conflicts or misunderstandings. Encouraging leadership to share their vision for the project and ask the larger team to focus feedback only on the key objectives, pain points, and requirements outlined by leaders may create a top-down approach that ignores other stakeholder perspectives or needs. Limiting participation in key project discovery, requirements, and solutioning meetings to leadership and engaging the larger team to answer questions directly related to their roles when needed may create a siloed approach that reduces collaboration or buy-in. References:
https://trailhead.salesforce.com/content/learn/modules/salesforce-business-analyst-certification-prep/collaboratio

This answer describes the steps involved in creating a customer journey map, which is a tool to visualize and improve the customer experience. A customer journey map helps to identify pain points, gaps, and opportunities for improvement in the current state, and design a future state that aligns with the business objectives and customer needs. References:
https://trailhead.salesforce.com/en/content/learn/modules/customer-journey-basics/create-a-customer-journey-ma