The macro only works intermittently for me. Maybe 25% of the time recently, even using Beti's method.
My iTanks method, is to create a 4 toon boosted group, queue for a specific instance, have my twink queue for the same instance separately and when you are "randomly" joined into the instance, exp is gained until you drop the instance group.
Explained:
I created 3 F2P (free to play starter) accounts, I open my main account, my twink account (one of the F2Ps), and the other two accounts. This gives me 4 accounts running at the same time on the same computer (not a gaming laptop, but it manages it). So now I have my twink account and 3 placeholder account (4 of 5 for a group).
Now I have my buddy that I'm going to boost invite all the accounts except my twink's account. Then he queues for a specific instance (you can pick any) picking one as a healer and one as a leader!
I then queue my twink as a tank (NOT in group with the other 4 accounts). When I see the dungeon pop on my tank and my other accounts I join. If it doesn't pop for all my accounts at the same time, I don't accept and requeue for the same instance again. In a short time your tank and your other accounts with pop at the same time. You are now "randomly" in the same group and everyone that wants it will get EXP! After the first instance, I drop the accounts I don't want boosted (the two F2P accounts and my main account). You can keep your main account in the group, follow the character that you are boosting and your main account toon will level as well.
Recap:
Twink 1 is not in a group
Boosted Group: Boosted account is in a group with your main account and two F2P accounts.
1. Boosted Group queues for a specific dungeon (follower or regular).
- Make sure twink can also pick the specific instance (chromie time matters)
- Have all toons accept queue before going to step 2.
2. Twink queues for the same instance as Boosted Group.
3. When accept instance pops, make sure it pops at the same time for Twink as Boosted Group. If not, don't accept and requeue (most of the time the twink will pop first, requeue and the second pop is with everyone else.
4. After you finish the first instance, anyone that isn't getting boosted, drop out of the group (not just instance). This will leave the twink and those accounts needing exp in the same "random" group. Queue for anything (random timewalking is the way to go). Keep the group together until the desired level(s) are reached.