Manage Sales Contracts Version 2 - Extend Link List in Popup

[uifivvy]

Hello Experts,

I want to provide a link to a custom Fiori App in the link popup of a sales contract. The popup is opened when the link of the sales contract number is clicked.

Is there an easy way to extend the link list in the popup, for example via Fiori Launchpad Content Manager (CrossApplicationNavigation)? Or is it only possible via SAPUI5 Adaptation Projects?

(This is a screenshot of the Purchase Order app, but the popup of the Sales Contract app is similar)

Thanks in advance

Julia