First of all let me say THIS IS NOT MY MOD
I downloaded this way back in the days of No Man’s Sky launch and have used it ever since.
It changes the red dot on creatures to be scanned to a red triangle with an exclamtion mark and so making it easier to find those that you have missed.
Place the .PAK file (inside the zip file) in the No Man’s Sky/GAMEDATA/PCBANKS/MODS folder.
If the “MODS” folder dosn’t exist create it. And then delete the “DISABLEMODS.TXT” in the PCBANKS folder or rename it / move it to another folder. Otherwise no mods will be loaded!