Remove two pieces of siding below the damaged ones starting from bottom working upward by removing the staples from the bottom.
Lift the metal at the bottom and rotate it upward or downward until flange unhooks. Gently remove the panel without kinking or bending it. Check the framing for damage. If there is no frame damage replacing the siding is basically the reverse of the removal.
Lift the metal to side of the RV and rotate it until the flange is unlocked.
Lower the panel until it is flush with the frame. Be careful not to bend the siding.
Staple in the manufacturer's original placement. Glue if necessary. Apply the sealant to the edges of the panels where it can be clamped by the moldings. Use Butyl tape and silicone sealer. Make sure the edge and corner moldings cover the corner of the panels to prevent water from entering the RV.