{
    path: 'dashboard',
    component: DashboardComponent,
    children: [
        {
            path: '',
            component: DashboardHomeComponent,
            pathMatch: 'full',
        },
        {
            path: 'em',
            component: EmComponent,
        }
        {
            path: 'ec',
            component: EcComponent,
        }
    ]
}

<div class="Sidebar">
<a routerLinkActive="li-bg" [routerLinkActiveOptions]="{exact: true}" routerLink="/">Dashboard</a>
<a routerLink="/dashboard/my-profile">My profile</a>
</div>

<div class="row">
    <div class="col">
        <a routerLink="/dashboard/em">Em Service</a>
    </div>
    <div class="col">
        <a routerLink="/dashboard/ec">Ec Service</a>
    </div>
</row>