Dashboards user access management

Hello,

We have prepared several dashboards for different departments of factory and we want these dashboards to be available for only the related users/groups.

We can manage which users/groups can see which reports but we can not see any security setting to manage access to different dashboards for different users.

We can only give them "access to dashboards" and they can access all dashboards. How can I manage user access to different dashboards?

Reports authorization settings:

Dashboards: