If your organization or team has access to an internal full text library for your review, you can add a button to automatically link to that text from the Review Screen using the Custom OpenURL Add-On.
Upon set-up, this tool will allow you to use a unique identifier (such as DOI or the PMID) of a full text article in order to easily link to it through the URL of your internal library. It will create a button with a custom name too.
Once you have filled in all required fields, go to Workflow > Manage Levels and click on the Level of interest to open the Level Settings. In the Level Settings, you can enable the button to appear on the Review Screen for that Level under the Display Full Text Sources section. Check the box beside the custom URL option and save your changes.
The link will appear on the Review Screen once you have reconciled your references.