user.rb

 rails_admin do
    configure :expertise do
      bootstrap_wysihtml5 true
    end

    edit do
      group 'Login' do
        field :email
        field :password do
          visible false
        end
        field :password_confirmation do
          visible false
        end
      end

      group 'Profile' do
        field :team_member
        field :name
        field :title
        field :expertise
        field :image
      end
    end

    list do
      field :email
      field :name
      field :title
    end
  end
end