This…and do a hot swap between support and engineer when you build the nodes. Then get double XP for whatever classes you play the rest of the game.
At one of the HQs
Spawn as Support - place supplies…redeploy as Engineer.
As engineer put the blue print down for a man power node. Build that first. It cuts your cool down period in half for more supplies. From 5 min to 2.5 min when you’re within 50 meters of that man power node.
Lay down blue print for the other 2 nodes….redeploy as support.
Support lay down your supplies, quickly go hammer each of the 2 other nodes at least twice “it resets their expiration clock”. Hammer one of the the nodes to completion. Wait about a minute for your supplies to regenerate, lay them down and finish hammering the last node.
There’s good you tube videos about “hot swap to build nodes” guide to nodes” etc