Configuring application wide integration settings for YouTrack in Test Collab:
On your Test Collab instance, navigate to Main Dashboard > Settings > Issue Manager and provide the username (or email) and password you use to login to your YouTrack instance, after selecting YouTrack from the drop down available on the issue manager integration settings page.
You also have an option of allowing the reported issue to be resolved / closed automatically when the related test case passes by checking "Resolve reported issues when a failed test case is marked as passed". When you check this you will be prompted to provide the status code that YouTrack uses for resolved issues, you need to enter the same for "Status code for resolved".
Project wise integration settings
When it comes to project wise setting for YouTrack, you mainly have to set the value for Project field and that is important for configuration.
For Project field , the list of values will automatically be fetched from YouTrack on the basis of credentials provided by you during configuring application wide settings.
You can also add other fields including any custom field using "Add user defined field" from the drop down, clicking this you will get a text box in place of drop down to enter the name of the field.
Once the values for all fields have been provided you can save and test the settings by creating a sample issue in YouTrack.
Once you have configured YouTrack as an issue manager , bugs can now be automatically reported into YouTrack if a test case fails while execution and the tester has opted to report. More information on this is available here.
You can also get requirements from YouTrack linked with test cases in Test Collab so that you can have a better traceability and coverage analysis. For details on requirements management please refer relevant user guide article.