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As far as I know, you just need to sign up and add your company. Their admin will review the details and approve the listing as applicable.

To install from cPanel softaculous - https://manage.accuwebhosting.com/knowledgebase/2101/How-to-Install-WordPress-Through-Softaculous.html

To install manually - https://manage.accuwebhosting.com/knowledgebase/2498/How-to-Install-WordPress-Manually.html

Please refer this KB URL - https://manage.accuwebhosting.com/knowledgebase/3043/How-to-set-the-cron-job-to-run-a-PHP-script-in-cPanel.html to set the cron job to run a PHP script in cPanel.

While we create a new account in cPanel, you may find following default files and folders:

public_html: To make your website publicly available over the Internet, please upload your web pages and images into this folder.

public_html/cgi-bin: CGI Bin directory.

public_html/images: It is used to store the images for any webpages you upload.

public_ftp: It contains files to be accessible via anonymous FTP.

public_ftp/incoming Files: Files uploaded via anonymous FTP.

.cpaddons: Stores information about cPanel Add-ons for particular account.

.trash: Items deleted or moved to trash in cPanel File Manager.

public_html/.htaccess: The main .htaccess file for the pages served on this cPanel account over HTTP.

mail/: It stores the mail data.

mail/new: Stores incoming mail that has not yet been marked as received by IMAP.

mail/cur: Mail sitting on the server.

mail/tmp: Temporary directory for mail.

tmp/: Temporary files created by cPanel in various activities. Third party scripts may also use this directory for their own temporary files.

tmp/analog: Temporary files for generation of Analog stats for your website.

tmp/awstats: Temporary and configuration files for generation of AWStats for your website.

tmp/awstats/awstats.yourdomain.com.conf: Configuration file for generation of AWStats for a website.

tmp/cpbandwidth: Temporary directory for tracking bandwidth usage through cPanel.

tmp/cpbandwidth/yourdomain.com-bytes_log: Number of bytes tranferred by yourdomain.com.

tmp/webalizer: Temporary files for generation of Webalizer HTTP stats for your website.

etc: Stores other information related to your website.

Mostly .(dot) files are configuration files for the respective service. e.g., .softaculous, .fantasticodata.

You can refer this URL for the same: https://manage.accuwebhosting.com/knowledgebase/702/How-to-install-third-party-tools-for-your-domain.html