Here is how you can do this. Use the formatting below to add parameters to your URL link. This will feed the data from IFS inside the URL and when they get to the landing page the data will be pre-populated. If there are other fields you want to feed over, just get the field names of those fields and use the same convention shown here. First one starts with a ? and the rest start with an &. These are all connected in string (it is line breaking on my screen, so I wanted to clarify that). No spaces can be inside the data or it will break the linking.
Hope that helps.