Restricting Inventory Organization at user level.

Hello,

How to restrict an inventory organization at user level ? I know restriction of inventory organization at responsibility level using HR:Security Profile. HR:Security Profile works fine but only at reponsibility level. Also, I know how to restrict inventory organization using ORGANIZATION ACCESS option in Inventory.

We are almost creating responsibilities according to individual users and have more than 100 inventory organization. I becomes difficult to create reponsibilities everytime (created more than 200 reponsibilities)for individual user and assign access using profile and access option.

What I want is that we should just have one reponsibility and depending upon user assign access to organization.