Generally you should not attempt this yourself.

Aside from possible insurance/liability problems
(applicable more to US residents than the rest of the
world) you will find that the cost of having the
appropriate harnesses and suspension gear made will
be greater than the cost of hiring in professionals to
do it for you.

Under no circumstances should you attempt to modify
climbing equipment or parachute harnesses to use for
this purpose - it isn't worth the risk.

Ordinary tab tracks have also be suggested for suspending
 people from - if you have any sense don't try that either.
OK the weight of the tabs may be greater overall than
that of a person, but the load is spread along the whole
length of the track, not just at one point