hjaimeo1 I got your point. In article content, you can add this code to show 3 images per row:
<div class="image-wrap">
<div class="row">
<div class="col-md-4"><img src="images/demo/content/img-18-thumb.jpg" alt="" /></div>
<div class="col-md-4"><img src="images/demo/content/img-19-thumb.jpg" alt="" /></div>
<div class="col-md-4"><img src="images/demo/content/img-20-thumb.jpg" alt="" /></div>
</div>
Remember to disable editor in Global Configuration first.