Hi,
You can increase the relevance of certain fields, and also estabilish an order by post type.
– So if you need certain post type results first, you can give an order: https://i.imgur.com/OVHbkcg.png
– and also make have the limit separated between the post types: https://i.imgur.com/kHDNXbR.png
This configuration is good when you want to prioritize certain post types over others, but also have roughly the same number of results for each post type.
The index table engine calculates the relevance based on how many times the keyword occurs in each field, and that value is also multiplied by the relevance value. By default the titles have the highest relevance.
– You can adjust these as well, here: https://i.imgur.com/VVXkYft.png
To prioritize a certain post over others, you have the priority options, which I already detailed in my previous post. If you want to prioritize only a few posts, then I recommend using only the individual priority options, that is the easiest, and the most performance friendly.