Once a Settlement deploys its first initial ' Settlement Bunker' it can then look to unlocking the FORTH slots for both Reactors and also Research.
You can locate these Support items for Reactors HERE and for Research HERE.
Your Settlement MUST already have the aforementioned Bunker deployed, not to be confused with the recent 'Settlement Business Bunker'. These upgrades are optional, but will allow for more power flexibility and an option to increase a settlement's daily research.
Upon entering the Bunker, if these two add-ons are not unlocked, you will see a bar reminding you they are available.
Coops
Slots Four - Reactor & Research
Slots Four - Reactor & Research
A Walk in the Woods helps me relax and release the tension from a hard day at the code.
The fact that I'm dragging a body behind me should be irrelevant!
The fact that I'm dragging a body behind me should be irrelevant!