Installation and usage
Prerequisites
Spigot/Paper 1.10.2+
Java 11+ (depending on the version)
Additional port allocation
Free storage (a lot)
Installation
Download dynmap
Upload it in the plugins folder, from the File Manager.
(Re)start the server to load it.
Web Server
In the Configuration.txt, located at plugins/dynmap/Configuration.txt:
Find (use CTRL + F shortcut) webserver-port field within the file.
Change the port's value to your additional port allocation's value.