Once the actions have been categorized (high-level activities, activities of lesser importance, etc.), the set of tasks related to them will be defined, which will allow fulfilling the objective of the project.
For each activity, define with your team what are some of the tasks that the user would have to perform to complete the activity. As a kind of roadmap, where the tasks are listed from top to bottom, constituting the columns of the map.
At this stage, prioritizing the user stories can result in the development of the Minimum Viable Product (MVP), which consists of a preliminary version of the product that will allow you to gradually improve it.