As you aware that with new version of business central comes up breaking changes which actually change the way of writing few points like assisted setup and many more.

Today we will see how to create assisted setup in wave 2 with new events. In this document have created one of the most simple assisted setup.

Step 1 :- Create New table

table 50100 "SetupTable"
{
    DataClassification = CustomerContent;

    fields
    {
        field(1; GroupCode; Code[10])
        {
            DataClassification = CustomerContent;

        }
        Field(2; "Group Description"; text[100])
        {
            DataClassification = CustomerContent;
        }
    }

    keys
    {
        key(PK1; GroupCode)
        {
            Clustered = true;
        }
    }



}

2. Create New page

page 50100 "SetupPage"
{
    PageType = ListPart;
    SourceTable = SetupTable;
    layout
    {
        area(content)
        {
            repeater(SetupGroup)
            {
                field(GroupCode; GroupCode)
                {
                    ApplicationArea = All;
                    ToolTip = 'Select the specified group code';
                }
                field("Group Description"; "Group Description")
                {
                    ApplicationArea = All;
                    ToolTip = 'Specifies a description.';
                }
            }
        }
    }
}

Step 3 :- Now use new assisted setup module to create assisted setup as below

codeunit 50100 "SetupTableAssistedSetup"
{

    var
        AssistedSetup: Codeunit "Assisted Setup";
        AssistedSetupGroup: Enum "Assisted Setup Group";
        CurrentGlobalLanguage: Integer;
        SetupWizardTxt: Label 'Set up Table';
        SetupWizardLinkTxt: Label 'https://google.com', Locked = true;

        AlreadySetUpQst: Label 'Setup is already set up. To change settings for it, go to the setup again.Do you want go there now ?';

    [EventSubscriber(ObjectType::Codeunit, Codeunit::"Assisted Setup", 'OnRegister', '', false, false)]
    local procedure SetupInitialize()

    begin
        CurrentGlobalLanguage := GlobalLanguage();
        AssistedSetup.Add(GetAppId(), PAGE::SetupPage, SetupWizardTxt, AssistedSetupGroup::Extensions, '', SetupWizardLinkTxt);
        GLOBALLANGUAGE(1033);
        AssistedSetup.AddTranslation(GetAppId(), PAGE::SetupPage, 1033, SetupWizardTxt);
        GLOBALLANGUAGE(CurrentGlobalLanguage);
        GetInformationSetupStatus();
    end;

    [EventSubscriber(ObjectType::Codeunit, Codeunit::"Assisted Setup", 'OnReRunOfCompletedSetup', '', false, false)]
    local procedure OnReRunOfCompletedSetup(ExtensionId: Guid; PageID: Integer; var Handled: Boolean)
    begin
        if ExtensionId <> GetAppId() then
            exit;
        case PageID of
            Page::"Assisted Company Setup Wizard":
                begin
                    if Confirm(AlreadySetUpQst, true) then
                        Page.Run(PAGE::SetupPage);
                    Handled := true;
                end;
        end;
    end;

    local procedure GetAppId(): Guid
    var
        Info: ModuleInfo;
        EmptyGuid: Guid;
    begin
        if Info.Id() = EmptyGuid then
            NavApp.GetCurrentModuleInfo(Info);
        exit(Info.Id());
    end;


    local procedure GetInformationSetupStatus()
    var
        SetupTab: Record SetupTable;
    begin
        SetupTab.SetFilter(GroupCode, '<>%1', '');
        If SetupTab.IsEmpty() then
            exit;
        AssistedSetup.Complete(GetAppId(), Page::SetupPage);

    end;
}

Publish the extension and you will see following result.

Hope this will help you….