Tutorial #7 in the manual covers Lead - ins and outs. Not sure i understand what you are trying to do. IE; A single lead in and lead out would be applied to a single machining operation( usualy offsetting or cutter compensation ). See page 25 of the manual . If the chain is a machining operation it would seem that it would just be easier to add them.
You can change the location of the lead similar to how you change the location of a rapid.
I never used a plasma machine, so excuse the ignorance if i am wrong in what i say next, ie; the torch cut has width so that is the equivilant to
to a mill diameter and thus you would offset or compensate from the desired shape to suite.
BTW....reply based on LazyCam 3.00
RICH