Its an super simple, easy to use savegamemanager
It just renames the "Saves" folder.
!!!DO NOT CLOSE THE PROGRAMM JUST PRESS DONE AND IT WILL CLOSE IT SELF!!!
Heres the sourcecode if you are interested:
written in Visual Basic

Public Class Form1

    Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
        Dim Path As String = My.Computer.FileSystem.SpecialDirectories.MyDocuments & "\My Games\Skyrim"
        Try
            My.Computer.FileSystem.CurrentDirectory = Path
        Catch ex As Exception
            MsgBox("Skyrim saves not found!")
            Application.Exit()
        End Try

        If Not My.Computer.FileSystem.DirectoryExists("1") Then
            Try
                Rename("Saves", "1")
            Catch ex As Exception
                My.Computer.FileSystem.CreateDirectory("1")
            End Try
        End If

        If Not My.Computer.FileSystem.DirectoryExists("2") Then
            Try
                Rename("Saves", "2")
            Catch ex As Exception
                My.Computer.FileSystem.CreateDirectory("2")
            End Try
        End If

        If Not My.Computer.FileSystem.DirectoryExists("3") Then
            Try
                Rename("Saves", "3")
            Catch ex As Exception
                My.Computer.FileSystem.CreateDirectory("3")
            End Try
        End If

    End Sub

    
    Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
        If RadioButton1.Checked Then
            Rename("1", "Saves")
        End If

        If RadioButton2.Checked Then
            Rename("2", "Saves")
        End If

        If RadioButton3.Checked Then
            Rename("3", "Saves")
        End If
        Application.Exit()
    End Sub
End Class