Everyone should have a template for yourself. And if you need some custom views, just copy and modify.
Copy to #{Rails.root}/lib/templates/
Generate admin page includes controller and erb
rails g scaffold_controller admin/users
You can appoint a ModelName
rails g scaffold_controller admin/users_info --model-name=user
or skip jbuilder
rails g scaffold_controller admin/users_info --model-name=user --jbuilder=false
rails g scaffold_controller admin/users_info --model-name=user --template-engine=erb --no-jbuilder