You can enable auto-detection of links in your publications, if you're subscribed to the Premium or Optimum plan, in two ways.
A. While uploading a new publication:
1. After uploading your publication (see How do I upload a document/publish on issuu?), you'll get to a screen where you can fill in additional information about your publication.
2. To enable auto-detection of links, select 'Include detected links' checkbox. This will turn the auto-detected links on in your publication.
B. After you have uploaded the publication/On Pre-existing publications:
1. Go to your 'Publication List', choose a publication and click on 'Settings'.
This will open up the 'Document Settings' of that publication.
2. Select the 'Include detected links' checkbox to turn the auto-detected links on and then click on 'Save Changes'.
NOTE: Enabling the auto-detected links in one publication will only enable the links in that publication.