strapi/packages/strapi-plugin-users-permissions/config/layout.js

module.exports = {
  user: {
    actions: {
      create: 'create'
    },
    attributes: {
      username: {
        className: 'col-md-6'
      },
      email: {
        className: 'col-md-6'
      },
      username: {
        className: 'col-md-6'
      },
      provider: {
        className: 'd-none'
      },
      resetPasswordToken: {
        className: 'd-none'
      },
      role: {
        className: 'd-none'
      }
    }
  }
};