User journey mapping
Create a user journey map in GitLab, just like the one below, copied from gitlab-ce#55523.
A feature of design management.
There's many "mapping" frameworks/processes out there. I think the feature should be somewhat generic to capture many of those use cases. Some are more UX-focused, some are product-focused. A product-focused concept is user story mapping: https://www.jpattonassociates.com/user-story-mapping/