By default only one entry will exist, this will be to set the page title for each record.
In the portal this is then reflected in the browser tab as:
To add additional meta tags use the green plus to add a new tag, this will present an empty tag which you can set as desired, see below for our recommended settings. To remove a meta tag use the red 'dash' icon.
If setting up meta tags for use with citation manager software it is advisable to use the Multiple checkbox to ensure that multi entry fields such as authors are correctly separated in the metadata when importing into a citation manager.
Portal meta tags are portal specific, you may therefore need to setup for each active portal you have.