i need some help with upgrading units what im trying to do is make it so i can upgrade past 3 levels, also i need to make it to where i can get upgrades from the barreks tec lab like combat shields and stim packs available at the engineering bay

moving tech lab buttons to the engi bay:
-Add the research at the tech lab (barracks) to the engi bay's abilities
-Add buttons to the engi bay's command card

I don't know about the upgrades because I've never made an upgrade yet.

See this tutorial for upgrades http://www.stardepot.org/index.php?act=viewtopic&id=49