Roles/Users

Hello

I have searched for a way to customize Zoho to allow us to have certain Users limited to accessing data in certain categories.

In our case, we have our leads, etc. fall under 5 key industrial sectors (aerospace, IT, etc) and we'd like to be bale to limit some users from accessing data outside their sector.

This is obviously controlled in the "Industry" drop down menu. Can we do this somehow?

Thanks
Scot MacDonald