Lead lists, calling numbers, integrations, history, and reports belong to the workspace. A change to one of these items may therefore affect several people.
Tasks are assigned to a specific person. Language, profile, and display preferences also remain personal.
A member calls leads, updates their information, and handles their tasks.
An administrator can do the same work and can also configure users, integrations, calling rules, and billing information.
The pages available under Settings therefore depend on your role.
If a list, number, or settings page is missing, ask your administrator to check your role and the items assigned to you.