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On "Add User/Group/Project Role to Issue Security level" screen you can find CRM's Security groups:
| Security Group | Users who will have access to issues | How to set |
|---|---|---|
| Company employees | Reporter's colleagues (from same company in CRM). | How to set Reporter's colleagues access to issues |
| Holding employees | Reporter's colleagues, employees of parent company, employees of all child companies and employees of companies which have the same parent as reporter's company | Add Parent and Child companies attributes to CRM Company |
| Parent companies employees | Reporter's colleagues, employees of parent company and employees of parent company of the parent company | Add Parent and Child companies attributes to CRM Company |