When editing a Pushpage Issue, the insert dropdown can be used to insert clickthru or link to a detail page. To do this, 

1. Navigate to onMessage > Communication > Pushpage
2. Click the Pushpage Issues tab
3. Click Edit the Pushpage Issue
4. Click Edit on the desired region
5. Expand the Insert dropdown
6. Under the Detail Page category select the detail page you want to link to
7. The link will populate on the last cursor position
8. Click Apply changes
9. Click Save