If you're unsure what settings are handled by the Magento dashboard vs Algolia dashboard, you can read this guide here.
If you need to override the settings you can do that in the following Magento admin section: "Stores > Algolia Search > Credentials and Basic Setup" then click on "Advanced - Extra Algolia indices settings".
This is could be very useful when you want to add an additional custom ranking attribute, such as price.USD.default for example. As this attribute doesn't exist in Magento and setting it in Algolia dashboard will be overridden upon reindexing, you have to set it in the Magento admin section under Advanced - Extra Algolia Indices settings.
Once you do that you should be able to see the custom ranking added in your Algolia dashboard Ranking and sorting section:
Please make sure to use the correct syntax, otherwise you will get the following error: