question on plvling stack

Hi, i'm a archer and have tried to create a stack to plvl. However, sometimes my low lvl still getting hit from the mob. I've put a large body tanker as the last 1 to stack but still not working. The other stacks i saw in BI always has a ghost in their stack but i dont know how to make it working. Can any1 guide me on how to create a working stack?

When u want to make a stack for your team you should go a bit far from your team and return and stack,U should do this for all the members in your team
1 by 1

Exactly, everyone on the same spot, then the last one (Tank). If it aint working jump a little bit away from the Stack, I'd say about 4-5 clicks as far as you can just to be safe. Should work then.
If it still aint working, are those which get attacked doing anything? If they attack too, mobs will attack them.