The left green arrow is the trailing arm, the right green arrow is the LCA (Lower control arm), the white line is the toe arm (sometimes called a lateral link), and the yellow arrow is the upper wishbone (sometimes called an upper A arm).
You should only have to disconnect 3 bolts (hub bolt, shock bolt, endlinks bolt) on the LCA to install the rear assembly, the entire thing drops down and you can put a jack under the LCA to lift it into place with everything installed.