If your using a regular server, and if you are an op, just type /op (the player's name). If you aren't an op, go into the server files, open the op file, and type in your and you're friend's usernames.
Chat with our AI personalities
Add their usernames to the whitelist folder the server.exe folder made
That sounds like a user map like SkyBlock. Knowing the seed will only give you the original terrain that was generated before SkyBlock's creator made many changes to the land, to create the SkyBlock.
to tell you the truth i would love to know the truth but alot of people says, yes and it multiplys
you give them the IP address of your server and then they tipe it in on the online option on the mane menu of minecraft and then they should be able to join
It depends on the Minecraft server and what plugin the server is using for factions, sometimes typing "/help" on a server will give you the command syntax (what is required for each command). Alternatively if you know what mod they use, Google search for the plugin/mod and find out.