Avitar Clothing at no cost

We are a non-profit organization for a 50+ community.  Our volunteers are requesting specific clothing so they can be identified as hosts and/or trainers at events.  I am an MHCP member and the President of the organization. 

Is it possible for me to create a members only world and only add those specific folks to that world and then create a quest so that when they enter the world they do 1 task such as just enter the world and they "win" their designated shirt?  They saw this happen recently in another world so are requesting IF I can make this possible for them. These would be logo'd shirts specific to our 500+ member community.  And most importantly only to a small number of our volunteer folks. They will not be sold in any clothing shop or in a public world.