Hi Abdoul,

you can follow the instructions in this answer but your class should look like this :

@Name("startupHelper")
@Scope(SESSION)
@Install(precedence=Install.DEPLOYMENT)
public class MyStartupHelper extends StartupHelper {

    public String initDomainAndFindStartupPage(String domainTitle, String viewId) {
        String view = super.initDomainAndFindStartupPage(domainTitle, viewId);
        PathRef ref = new PathRef("/default-domain/workspaces/Workspace 1");
        try {
            if (documentManager.exists(ref)) {
                view =  navigationContext.navigateToRef(ref);
            }
        } catch (ClientException e) {
            // TODO
        }
        return view;
    }
}

I hope it helps.