Noted That:

• To install correctly this multi-image-upload.zip .
• Fisrt Download the multi-image-upload.zip to your computer
• Extract/Open multi-image-upload.zip to Your Computer.
• Then, Find readme.txt file inside multi-image-upload.zip and Open readme.txt .
• Now, Read the Requirements of this plugin. Which Wordpress Version and PHP Version are required to run this Plugin in Your Wordpress Site.
• Then, Follow the Tips Below.

Start the Tips:

1. First Download " multi-image-upload.zip " Plugin to your Local Computer. (Click Download)

2. Then, Login to your " yourdomain.com/wp-admin " Dashboard.

3. Then, Click on " Plugins " + " Add New " from left sidemenu of Dashboard.

4. Now, Click on "Upload Plugin" button.

5. Now, Browse " multi-image-upload.zip "  Downloaded plugin from your computer, Where you downloaded multi-image-upload.zip According to Step – 1 Above then, click on " Install Now"

6. Now, Click on " Active Plugin"

7. Then, See left sidemenu. " Multi Image Upload " folder is added on left sidemenu. Now, Click on " Multi Image Upload " folder.

   Noted that: If you do not see " Multi Image Upload " folder on left sidemenu then, see at left sidemenu " Settings " or " Tools ".

8. Now you configure yourself oR Watch video tutorial below about  Multi Image Upload Configurtions and Settings or How to work " Multi Image Upload " in your WordPress site.

After Activated Plugin According to Step-6 then,

1. Go to " Plugins " + " Installed Plugin " from Wordpress Admin Panel Leftside Menu.
2. or Direct go to: https://yourdomain/wp-admin/plugins.php
3. Then, Find " Multi Image Upload " Activated Plugin from Plugin List.
4. Then, Click on " Settings " from Plugin that is Multi Image Upload
5. Now, Edit/Add/Config the setting and Click on " Save Changes " button,

1. Upload plugin to the /wp-content/plugins/ directory
2. Activate the plugin through the ‘Plugins’ menu in WordPress
3. To retrieve linked images Use miu_get_images() into the loop to get an array of image URLs
4. Optional

If you need to enable this meta box for your custom post type for example ‘book’. Just edit the multi-image-upload.php as shown below

Replace:
$this-> post_types = array(‘post’, ‘page’);
With:
$this-> post_types = array(‘post’, ‘page’, ‘book’);