The way I make ships now is to click on each planet, go to the ships tab and add a corvette. If you've got 20 planets spread over 4 sectors however that takes a long time.
Is there an option to quickly build 20 ships spread over my 20 planets? I'm pretty sure I could do it in EU4.
The same with upgrading: it's annoying micromanagement to split your fleet into 20 parts, send them to the 20 planets, upgrade them and regrouping them. Is there an easier way?