Assign portal users to an organisation and limit votes to the organisation instead of user

We currently allow multiple users to join our ideas portal from the same organisation, this is due to different members of that organisation specialising in different fields and thus having different ideas based on their profession and different thoughts on what should be voted on.

It would be useful to have users be assigned to organisations within the ideas portal and add a limitation which would ensure that users from the same organisation cannot vote on the same idea.

Currently, we cannot stop users from the same organisation from intentionally or accidentally voting on the same idea which can skew the votes in favour of their interests without investigation into the voters.