PM Schedule Creation

Dear Team,

We are in process of loading New Preventive Maintenance schedules

currently we collected all activity ,association,and Bill of material ,Routing and PM schedule definition details

while loading PM Schedule  do we need to load current meter reading and last service reading ? or we can only load current reading

if we load last service reading whether we need to load for all activity or last service activity reading enough

currently we are working with preventive maintenance ,since the activities are common between assets we are unable to use BiIl of material so we are now reloading all data