It is possible to limit to which Extensions, Trunks or Cost Centers a user will have access to, for which it is necessary to go to USERS/System Permission.
![](https://wiki.vitalpbx.com/wp-content/uploads/2023/11/image016-1024x583.png)
The data to be configured are the following:
- Description, Brief description of System Permission.
- Extensions, the Extensions that the user will have access to.
- Trunks, the Trunks that the user will have access to.
- Cost Center, the Cost Center that the user will have access to.