1. On the Layout Options -> Results behavior panel you can enable that: https://i.imgur.com/CxvTGIa.png
2. This is not possible, at least not without a decent amount of custom coding. The control-clicking alone is not enough, as there is an additional action needed to trigger the opening of the selected results, perhaps as a right click/open context menu. That is not an easy task to achieve and maintain, given there are many different browsers and devices (including mobile phones).
For customizations, I can recommend wpkraken, they have a dedicated team to work on orders, specifically on WordPress environments.
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