Drupal 8.8.x - Allow to configure offset and number of items on Views Blocks

diff --git a/core/modules/views/config/schema/views.schema.yml b/core/modules/views/config/schema/views.schema.yml
index 21f606a329..5d2e57f31a 100644
--- a/core/modules/views/config/schema/views.schema.yml
+++ b/core/modules/views/config/schema/views.schema.yml
@@ -139,6 +139,9 @@ views_block:
     views_label:
       type: label
       label: 'Title'
+    offset:
+      type: integer
+      label: 'Offset'
     items_per_page:
       type: string
       label: 'Items per block'
diff --git a/core/modules/views/src/Plugin/views/display/Block.php b/core/modules/views/src/Plugin/views/display/Block.php
index bcdab29ecd..24ff49d92c 100644
--- a/core/modules/views/src/Plugin/views/display/Block.php
+++ b/core/modules/views/src/Plugin/views/display/Block.php
@@ -106,6 +106,7 @@ protected function defineOptions() {
     $options['allow'] = [
       'contains' => [
         'items_per_page' => ['default' => 'items_per_page'],
+        'offset' => ['default' => 'offset'],
       ],
     ];
 
@@ -126,6 +127,7 @@ protected function defineOptions() {
    */
   public function blockSettings(array $settings) {
     $settings['items_per_page'] = 'none';
+    $settings['offset'] = 'none';
     return $settings;
   }
 
@@ -240,6 +242,7 @@ public function buildOptionsForm(&$form, FormStateInterface $form_state) {
 
         $options = [
           'items_per_page' => $this->t('Items per page'),
+          'offset' => $this->t('Offset'),
         ];
 
         $allow = array_filter($this->getOption('allow'));
@@ -302,14 +305,45 @@ public function blockForm(ViewsBlock $block, array &$form, FormStateInterface $f
             '#title' => $this->t('Items per block'),
             '#options' => [
               'none' => $this->t('@count (default setting)', ['@count' => $this->getPlugin('pager')->getItemsPerPage()]),
+              1 => 1,
+              2 => 2,
+              3 => 3,
+              4 => 4,
               5 => 5,
+              6 => 6,
+              7 => 7,
+              8 => 8,
+              9 => 9,
               10 => 10,
+              12 => 12,
               20 => 20,
+              24 => 24,
               40 => 40,
+              48 => 48,
             ],
             '#default_value' => $block_configuration['items_per_page'],
           ];
           break;
+        case 'offset':
+          $form['override']['offset'] = array(
+            '#type' => 'select',
+            '#title' => $this->t('Offset'),
+            '#options' => [
+              'none' => $this->t('@count (default setting)', array('@count' => $this->getPlugin('pager')->getOffset())),
+              1 => 1,
+              2 => 2,
+              3 => 3,
+              4 => 4,
+              5 => 5,
+              6 => 6,
+              7 => 7,
+              8 => 8,
+              9 => 9,
+              10 => 10,
+            ],
+            '#default_value' => !empty($block_configuration['offset']) ? $block_configuration['offset'] : 'none',
+          );
+          break;
       }
     }
 
@@ -348,6 +382,10 @@ public function blockSubmit(ViewsBlock $block, $form, FormStateInterface $form_s
       $block->setConfigurationValue('items_per_page', $items_per_page);
     }
     $form_state->unsetValue(['override', 'items_per_page']);
+    if ($offset = $form_state->getValue(array('override', 'offset'))) {
+      $block->setConfigurationValue('offset', $offset);
+    }
+    $form_state->unsetValue(array('override', 'offset'));
   }
 
   /**
@@ -361,6 +399,9 @@ public function preBlockBuild(ViewsBlock $block) {
     if ($config['items_per_page'] !== 'none') {
       $this->view->setItemsPerPage($config['items_per_page']);
     }
+    if (!empty($config['offset']) && $config['offset'] !== 'none') {
+      $this->view->setOffset($config['offset']);
+    }
   }
 
   /**