Contribute to global index by submitting index actively

In the FAQ,
https://yacy.net/faq/#why-should-i-run-my-peer-in-senior-mode

It mentions this line:

Our idea of ‘information wares’ and their exchange can also be applied to junior peers: they must contribute to the global index by submitting their index actively

For the active contribution of the index is this something a junior peer does automatically or is there some additional administrative task that needs to be run ?