I have 5 years on 5 axis machines.For example,if you break a tool in a 4th or 5th axis position,you would first have to single block to stop feeding,then vector out of work piece clearly away,Document tool your on and block number and any other information so when you replace broken cutter,you know where to start program.Home machine and do a tool change to either previous tool or a plug.Go through tool replacement proceedure.Call up replaced tool and do either a block search or a cutter ID search in program.Turn down rapid to 25 % and hit start watching closely,single block when you get to the Z callout before entering M7(through the spindle coolant if applicable),make sure everything is doing what it suppose to do,spindle speed right,tool call-up in program same as cutter your on,check everything,looks good,bring rapid to 50% and take single block off,coolant is on,all aspects are green,hit start with finger on slide stop,just incase.All looks good,put rapid at 100% and your dancing.