Inviting players to your guild via web
Candidate for your guild members have to be on a mainland (Abella)
Functionality is available on a guild management page
Browse for a candidate by searching for he/she with his/her full name or just a part of it. Press 'Invite' and confirm your decision by approving her/him in an additional pop-up message box.
Player will receive your invitation and will be able to make a choice
Inviting directly inside game client
Alternatively, you might find a player directly inside MMO and send him a message via Authority skill
No matter inviting a player from a web page or directly inside a game if you are online while sending an invitation confirmation message will pop up in the game.