How can I lock/block a component ?

Hello, is there a way to lock a custom component or section from movement or changes?

Ex:

<custom code block with several lines> LOCK THIS ONE

<p>Some paragraph</p>

<more code with several lines> ALSO THIS ONE

This would be necessary to prevent the "page builder" guy, not to touch on the page structure, only the text content. Is that possible? Thanks!

Not something the app does no. That is something you will have to control with your code.