To group node fields in horizontal tabs in Drupal, use the Field Group module. Enable the module, then go to the Manage Display page of your content type. Select the "Tab" format for the field group and organize your fields into different tabs. Save the configuration, and the node fields will be displayed in horizontal tabs on the node view page.

To display subterms under parent terms using Views in Drupal, create a new View and add a relationship to the taxonomy term field. Then, add a contextual filter for the parent term ID and configure it to provide a default value from the URL. Finally, add fields for the subterm's name, description, or other desired information, and adjust the display settings as needed.

To override Drupal Views using templates, locate the template suggestions for your View by enabling the "Theme information" option under the Advanced section of the View's settings. Copy the suggested template file (e.g., views-view--[view-name].tpl.php) into your theme's template folder and modify it according to your needs. Clear Drupal's cache to apply the changes, and your overridden Views template will take effect.

To change the time zone in Drupal 7, navigate to Administer > Configuration > Regional and language > Date and time (admin/config/regional/settings). Select your desired time zone from the dropdown menu under "Default time zone". Save the configuration to apply the changes site-wide.

To add a Google Map to a contact page in Drupal, use the GMap module. First, install and enable the module, then configure the Google Maps API key under Administer > Configuration > Web services > GMap. Next, create a GMap field in the content type for the contact page and configure its settings. Finally, place the GMap field on the contact page using Drupal's block layout or Views.

To trim words in Drupal 7 using Smart Trim, install and enable the Smart Trim module. Configure the module's settings under Administer > Configuration > Content authoring > Smart Trim. Define the desired word limit and trimming options for content fields, then save the configuration to apply Smart Trim's word trimming functionality across your Drupal site.

To send emails through the Views Send module in Drupal, first, install and enable the module. Then, create a view that lists the content you want to send in an email. Add the "Send email" field to the view and configure its settings, including the recipient email address and message body. Finally, preview or execute the view to send the email to the specified recipients.