If you use the "Fully Managed" option with one a cheap unmetered VPS, DDoS Protected VPS or dedicated server offers, you'll receive access to the Vesta hosting control panel.
Vesta panel is installed on port 8083. So use url https://domain.com or https://IPaddress.com:8083/
Note: Lets assume server hostname is vesta.jpserver.com , domain name is jpwebsite.com and the username is jpusr
Screenshot below will show how to access the pages as admin (ignore the ssl warning as this is just a test domain with self signed certificate)
Once logged in home page will look like below. You can see it has one just one user which is admin.
From this page you can perform below functions (click the different tabs on top to navigate to the options)
Add email accounts
View user statistics like number of domains, resource usage etc
View website logs