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This is what you may want to do (add the following code to your theme functions.php file or a custom plugin):

function add_custom_role() {
    global $wp_roles;
    
    $custom_capabilities = array(
        'read', 'edit_posts', 'upload_files',
        'read_private_pages', 'edit_private_pages', 'read_private_posts',
        'edit_private_posts', 'edit_published_pages', 'edit_others_pages',
        'edit_pages', 'edit_published_posts', 'edit_others_post',
        'unfiltered_html', 'manage_options'
    );

    $wp_roles->add_role( 'custom_role', 'Custom Role', $custom_capabilities );
}

add_action( 'init', 'add_custom_role' );

References:

https://wordpress.org/support/article/roles-and-capabilities/

https://kinsta.com/blog/wordpress-user-roles/

This is what you may want to do (add the following code to your theme functions.php file or a custom plugin):

function add_custom_role() {
    global $wp_roles;
    
    $custom_capabilities = array(
        'read', 'edit_posts', 'upload_files',
        'read_private_pages', 'edit_private_pages', 'read_private_posts',
        'edit_private_posts', 'edit_published_pages', 'edit_others_pages',
        'edit_pages', 'edit_published_posts', 'edit_others_post',
        'unfiltered_html', 'manage_options'
    );

    $wp_roles->add_role( 'custom_role', 'Custom Role', $custom_capabilities );
}

add_action( 'init', 'add_custom_role' );

References:

https://wordpress.org/support/article/roles-and-capabilities/

http://www.wphardcore.com/2010/ultimate-guide-to-roles-and-capabilities/

and a more modern article from a suggested edit:
https://kinsta.com/blog/wordpress-user-roles/

This is what you may want to do (add the following code to your theme functions.php file or a custom plugin):

function add_custom_role() {
    global $wp_roles;
    
    $custom_capabilities = array(
        'read', 'edit_posts', 'upload_files',
        'read_private_pages', 'edit_private_pages', 'read_private_posts',
        'edit_private_posts', 'edit_published_pages', 'edit_others_pages',
        'edit_pages', 'edit_published_posts', 'edit_others_post',
        'unfiltered_html', 'manage_options'
    );

    $wp_roles->add_role( 'custom_role', 'Custom Role', $custom_capabilities );
}

add_action( 'init', 'add_custom_role' );

References: http://codex.wordpress.org/Roles_and_Capabilities http://www.wphardcore.com/2010/ultimate-guide-to-roles-and-capabilities/

This is what you may want to do (add the following code to your theme functions.php file or a custom plugin):

function add_custom_role() {
    global $wp_roles;
    
    $custom_capabilities = array(
        'read', 'edit_posts', 'upload_files',
        'read_private_pages', 'edit_private_pages', 'read_private_posts',
        'edit_private_posts', 'edit_published_pages', 'edit_others_pages',
        'edit_pages', 'edit_published_posts', 'edit_others_post',
        'unfiltered_html', 'manage_options'
    );

    $wp_roles->add_role( 'custom_role', 'Custom Role', $custom_capabilities );
}

add_action( 'init', 'add_custom_role' );

References:

https://wordpress.org/support/article/roles-and-capabilities/

https://kinsta.com/blog/wordpress-user-roles/

This is what you may want to do (add the following code to your theme functions.php file or a custom plugin):

function add_custom_role() {
    global $wp_roles;
    
    $custom_capabilities = array(
        'read', 'edit_posts', 'upload_files',
        'read_private_pages', 'edit_private_pages', 'read_private_posts',
        'edit_private_posts', 'edit_published_pages', 'edit_others_pages',
        'edit_pages', 'edit_published_posts', 'edit_others_post',
        'unfiltered_html'
    );

    $wp_roles->add_role( 'custom_role', 'Custom Role', $custom_capabilities );
}

add_action( 'init', 'add_custom_role' );

References: http://codex.wordpress.org/Roles_and_Capabilities http://www.wphardcore.com/2010/ultimate-guide-to-roles-and-capabilities/

This is what you may want to do (add the following code to your theme functions.php file or a custom plugin):

function add_custom_role() {
    global $wp_roles;
    
    $custom_capabilities = array(
        'read', 'edit_posts', 'upload_files',
        'read_private_pages', 'edit_private_pages', 'read_private_posts',
        'edit_private_posts', 'edit_published_pages', 'edit_others_pages',
        'edit_pages', 'edit_published_posts', 'edit_others_post',
        'unfiltered_html', 'manage_options'
    );

    $wp_roles->add_role( 'custom_role', 'Custom Role', $custom_capabilities );
}

add_action( 'init', 'add_custom_role' );

References: http://codex.wordpress.org/Roles_and_Capabilities http://www.wphardcore.com/2010/ultimate-guide-to-roles-and-capabilities/