Instructions to get 10 Hosted Tables to count:
1) Start a private Joker Table or any other table, me and someone else done Joker so we didn't lose any chips.
2) When the Table is loaded, invite your partner into the game.
3) Once he has entered the table. You will both have to call / check for one hand, to enable it to count towards the 10.
4) When you've both been dealt the second hand, it's safe to leave.
5) Repeat the process another 9 times for the Achievement.
PS: You may want to take turns and you will also get "Be My Guest" Achievement as well for hosting 1 private table.
Video Tutorial: