Users blocks are components that can be added to a web page builder to make it easier for users to create complex layouts. In GrapesJS, custom blocks are essentially templates that users can add to their page with a single click. These templates can contain anything from simple text blocks to complex interactive elements like forms or sliders.

The advantage of using users blocks is that they can save time for both web developers and end-users. Developers can create a library of custom blocks that can be reused across multiple projects, while end-users can easily add pre-designed components to their pages without having to create them from scratch.

Options:

1. Save remote or localstorage. Remote store hasthe functionality for save/remove/fetch data.

2. Rename button in Blocks Manager.

3. Hide/show the inputs in modal window.