Let's take the example of the field configuration provided on the following page: Local Jira - Similar issues
Here's how to import this file into your own Elements Connect configuration:
First, right click on the file and click on "Save link as" to save it to your computer
Then, go to the Elements Connect administration page and create a new field:
Edit the previously created Connect field:
Among the three available options, choose "IMPORT an external configuration":
Select the datasource mentioned in the documentation. In our case, it's Jira issues (JQL). Then select the previously downloaded JSON file:
Your Connect field is now correctly configured!
Just click on Save to confirm the changes made.