Etoro copytraders

I am trying to get my head around adding Etoro to PP. I buy two things on Etoro:

  • I follow copy traders
  • I buy ETFs

What is the best way to treat the copy traders. Should I create a security for each copy trader and set the price for one unit to one - and then buy the number that I put into the copy trader (e.g. 500 units). When adding more money I will just add more units. Then each month I will adjust the price of the unit according to the P/L for the copy trader? Or is there a better way?