Customers group in Insight/Asset link with user group

[Hervé RANCHIN]

Hello

I want to config a project with a portal where my client , from different compagny, create issue.
and the support is config with differente group, each groupe are dedicate ton a compagny.

Some issue are "public" and every group can see it, some has to be restricted only for the group of user that are dedicate to the compagny.

I think than i have to create in insight/Asset, the different groups base on the compagny name and add customers and user.

but i cannot find how connect customers to asset.

If you have a way to link organisation of customers and group of users, it will be great 

Thanks

I hope its understandable