This recipe assumes you have already installed 2sxc and are working on an Angular app with dnn-sxc-angular.
To enable toolbars, you can use the Angular directive sxc-toolbar. The directive allows to specify the options which are available in the 2sxc html toolbar. For example, a toolbar displaying a toolbar for exactly one entity can be built like this (excerpt from the DNN Sxc Angular Template):
<ol>
<li *ngFor="let person of persons | async" [sxc-toolbar]='{toolbar:{entityId:person.Id}}'>
...
</li>
</ol>
The toolbar will automatically be placed at the correct location.