How various medications attack the HI virus

Receptor blockers prevent the HI viruses from docking onto the receptors CD4 and CCR5 and injecting their RNA into the host cell.

Reverse transcriptase inhibitors prevent the genetic information of the virus in RNA form from being re-written as DNA required for the cell.

Integrase inhibitors prevent the insertion of the virus genetic information into
the DNA of the host cell.

Protease inhibitors prevent the virus proteins produced by the host cell from being
cut into "building blocks" of the right length. So the "final assembly" of functioning viruses never occurs.