sacrificial anode for auto cover tracks in swg pool

[haroldo]

Hello again

I've been trying to understand what and where for the sacrificial anode. I would like to mainly protect the auto cover tracks. Could I get pointed to some info of what I need to ensure the builder does? Is there anything I should be doing since concrete will be shot this coming Wednesday? I did a search here, but can't quite understand what goes where despite reading multiple threads

thanks for any insight