//So, I am currently trying to set up a join announcement for my bot. I got the basic code (showing later on below) and got to put it in the CommandHandler at the bottom of the class which I have done. However, i have no idea where and how to call it to run.

public async Task AnnounceJoinedUser(SocketGuildUser user)
        {
            var channel = user.Guild.DefaultChannel;
            await channel.SendMessageAsync("Welcome to the server " + user.Mention + " !");
        }

//hat above is my current code for it.