Hello,
for an orientation to GDV2 check out the docs. GDV2 works differently, giving you a lot of control through the use of pages and page templates. These are normal WP Pages that you can edit to change your options.
Your questions should be answered by reading the docs, please take a look here:
https://wpgeodirectory.com/docs-v2/geodirectory/installation/#convert
#4 Home Page! – In GDV2 you can set any non-GD WordPress page as your home page. You cannot use the Location or Search pages as your home page. You will need to add shortcodes and other content to your GD Home page after conversion if you are using GD Home as your site home page. Read more
https://wpgeodirectory.com/docs-v2/geodirectory/getting-started/
To make changes to the archive page template, you can add blocks or shortcode to the GD Archive template. Open your site’s pages and search “GD”
Read more about it here: https://wpgeodirectory.com/docs-v2/geodirectory/page-design/