On our standard refreshers we start with assembeling our equipment together and do a detailed briefing/theoretical refreshment. After that we will go into the confined water and practice all safety relevant skills (mask and regulator clearing, emergency skills…). Once this is done we focus on buoyancy and getting back into diving. Of course we do a debriefing after each dive to make sure you know exactly what to change and what to practise on following dives.
But we can basically refresh everything you would like us to: deploy smb, rescue skills, etc. – once in a while its good to refresh courses that you might have done years ago. Divers learn a lot and gladly usually don´t use for instance rescue skills, however its best to have them updated once in a while to have them ready in case you need them one day. Safety through repetition is very important and its the divers responsibility to make sure they not only have their buoyancy right, but also their skills in case things are not perfect one day.