Which two objects are customizable the Stage Setup Flow?

The Stage Setup Flow is a tool that allows administrators to customize stages for leads and opportunities based on best practices from Salesforce experts. The Stage Setup Flow guides administrators through a series of questions about their sales process and then creates or updates stages for leads or opportunities accordingly. The Stage Setup Flow also provides tips and resources for each stage such as key fields, guidance for success, reports and dashboards, etc. References: https://help.salesforce.com/s/articleView?id=sf.stages_setup_flow_overview.htm &type=5