The Status / Cargo view is available in the cockpit, on Planets and at your Home Base.

The Cargo View is especially useful.  Here, any Ship upgrades that you purchase or create are stored.  They will show a USE button.  Pressing USE will install the upgrade.

As your crew continue to work on your ship, their efficiency level will slowly decrease.  The lower the level, the slower they are making things.  Combat bonuses are also affected.  Don’t forget to take frequent vacations on planets.