First of all, make your route public, so that it can be found by searching the site:
Then go to your AudioGuide manager to generate the links:
Next, under QR link generation you can generate URLs to share:
This interface is explained in detail in the article: Choose the QR Codes option to generate your URLs, if you have , enter the URL of the latter.
Once the URLs are generated, you should find them here:
These URLs do not change unless you change the unique name of the stations.
If you want to give the possibility to choose between several routes with the same URL, select the routes in question in the multiple selectors.