Assert that the main menu shows, or does not show, an entry or an item to the employee: a limited profile sees fewer of them.
Examples
Then I should see "Modules" in the back office menu
Then I should not see "Modules" in the back office menu
Then I should see "Catalog > Products" in the back office menu
Then we should not see "Customers > Customers" in the back office menu
And I should not see "Advanced Parameters > Team" in the back office menu
Pattern
Then(/^(I |we )*should( not)* see "([^"]*)" in the back office menu$/, …)
Part of @webship-js/prestashop-steps (github.com/webship/prestashop-steps), a step pack for Webship-js 2.0.x.