Add server
freeFree. At this step you only need the address - you will add the name, modes and description in the next step, and the server will appear in the directory.
Server address
The same address where players enter. The port is needed only if it is non-standard: mc.example.ru:25566, Bedrock has 19132.
Next - login via Yandex or VK. The address will be saved and an account will be created automatically.
Card
On the next page: title, line below it (up to 40 characters, like MOTD), modes - from 1 to 30, by which the server finds filters -- and a description. Banner and screen shots can be added later. This is where the player selects your server on the list.
Players online
Monitoring polls servers every 5 min. The number of players and version will appear on the card after the first survey - without your participation. It's free and stays free.