Create a new role
`visibility_user_lcf_ids` (optional)
A list of Lead Custom Field IDs that define which leads user with this role can see. If the role has `view_all_leads` permission, this field should be empty.
`visibility_user_lcf_behavior` (optional)
Defines how lead visibility works for leads that don't have assigned users. If the role has `view_all_leads` permission, this field should be empty.
- `require_assignment` - leads without assigned users are not visible to this role
- `allow_unassigned` - leads without assigned users are visible to this role