Permission to modify list items based on different column

mkucharek You would have to use Power Automate Flow to set permissions when the item is created. I do something similar, everyone has read access to a list, the "Admins" have full control of the list. When added, I just run a step to provide permissions to people selected as responsible in a people column to the list item. 

If you only want those people to see the items and not others, you'll have to utilize the stop sharing action to strip permissions, then add them explicitly back using the example actions. Anyway hope this helps.