Deviation, re-anchor, transfer & knot rescues
Deviation rescues
Single deviation: use a spare carabiner to connect into the ropes above you and the casualty by pulling in on the deviation.
Double deviation: utilise the rope-to-rope transfer method past the double deviation.
Re-anchor rescues
Utilise rope-to-rope transfer with the casualty's descender connected through the rescuer's main work positioning point and the casualty's suspension carabiner.
Mid-transfer rescue
Make connections to the casualty and descend to the rescuer until at the vertical position.
Knot rescue
Rescue the casualty using a rescue rope connected to the working line — transfer with the casualty onto the new rope and descend.
Aid climb, short link & fall arrest rescue
Use the counter-balance method to either descend with the casualty or lower them.