So in v7 you could do:

using AutoMapper;

using global::Umbraco.Core;
using global::Umbraco.Core.Models.Mapping;
using global::Umbraco.Core.Models.Membership;

using Our.Umbraco.RedirectsViewer.Models;

/// <summary>
/// The usergroup mapping.
/// </summary>
internal class UsergroupMapping : MapperConfiguration
{
    /// <summary>
    /// Configures the user group mappings
    /// </summary>
    /// <param name="config">
    /// The config.
    /// </param>
    /// <param name="applicationContext">
    /// The application context.
    /// </param>
    public override void ConfigureMappings(IConfiguration config, ApplicationContext applicationContext)
    {

what do u have todo in v8 to add mappings?Current i get error on :

MapperConfiguration

It cannot inherit from it because it cannot find it. Has it moved? Do you namespaces need updating?

Regards

Ismail