TrackStudio Enterprise 3.1
Example 2

Suppose we need to grant customers access to information about bugs in the system which are currently being developed. To do that, the new users should register as a 100 external customer. They should not be allowed to create sub-users. They should have no time limitations to use their account, and they should have access to the project Customer Support. In this case you should create a registration rule like:

Property 
Value 
Status 
100 external customer 
Task 
Customer Support 
Children Allowed 
Expire in Days 
<empty> 
Create a New Project for Each User 
Off 
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