Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature currently requires accessing the site using the built-in Safari browser.
If you are still using CentOS 7.9, it's time to convert to Alma 8 with the free centos2alma tool by Plesk or Plesk Migrator. Please let us know your experiences or concerns in this thread: CentOS2Alma discussion
Sure, that is possible, but this doesn't really have a lot to do with Plesk. Install a ticket system (Google around, there are lots of them) or write one yourself (a programming course is outside the scope of these forums I'm afraid).
If you want a ticket system, go find/buy/write one and install it. SWsoft sells a 'Multi-Level Help Desk' add-on for Plesk, but you can choose whatever software you like. Search for "ticket system" on Google and you will find a lot of ticket systems. I like OTRS myself.