When building the tape for the 5 pin slider, build your tape based on shooting in your long and short distances. Then once you know your tape is solid, move your sight back to your HOME position and attach the tape so your indicator is at the HOME number. If 60 is your slider, attach the tape and make your pointer zeroed at 60. Then when you slide your sight, your 60 yard pin will be used to wherever your indicator points to.
when you say to input your long and short marks in to the software, is this a measurement that you input? distance between the two?