How to Add Additional .exe to playercorefactory?

I don’t know how to add (2) .exe processes or if it’s possible to a playercorefactory.xml?
Anyone know code modification to add another .exe process?
I would like this additional .exe process to start 10 seconds before the 2nd one if anyone’s attempted anything similar.

Code:
<playercorefactory>
  <players>
   <player name="NameOfExternalPlayer" type="ExternalPlayer" audio="false" video="true">
     <filename>PathToExternalPlayer.exe</filename>
     <args>"{1}" /fullscreen /close</args>
     <hidekodi>false</hidekodi>
     <hideconsole>false</hideconsole>
     <warpcursor>none</warpcursor>
   </player>
  </players>
  <rules action="prepend">
   <rule filetypes="iso|bdmv|mpls|m2ts" player="NameOfExternalPlayer"/>
  </rules>
</playercorefactory>