Google discontinued their URL submission tool in July 2018. Now, the only way to submit your website is by adding your sitemap in Search Console. What is a sitemap? It’s a file that lists all the pages on a website. It’s most commonly an XML file. Your sitemap is usually located at yourdomain.com/sitemap.xml .
The problem is that use users / webmasters can’t do this for their own subdomain of Trooptrack.com
Could TT submit a new sitemap to Google once a month with all of its public-facing webpages? Of all its subdomains?
The old method, https://www.google.com/webmasters/tools/googlebot-fetch?hl=en&siteUrl=https://troop68.trooptrack.com/, might work but its not optimal, rather hidden, and a PIA for non-web-geeks.
For the full story on all search engines, see https://ahrefs.com/blog/submit-website-to-search-engines/ but note that Bing now requires submission from inside an account.