There you go:

DEFPARAM CumulateOrders = false
//
IF Not OnMarket THEN
   ID = 0
ENDIF
//
// strategy 1
//
MyLongCondition1  = close CROSSES OVER  average[20,0](close)
MyShortCondition1 = close CROSSES UNDER average[20,0](close)
IF Not OnMarket AND MyLongCondition1 THEN
   BUY 1 CONTRACT AT MARKET
   SET STOP   pLOSS   100
   SET TARGET pPROFIT 200
   ID = 1
ENDIF
IF Not OnMarket AND MyShortCondition1 THEN
   SELLSHORT 1 CONTRACT AT MARKET
   SET STOP   pLOSS   100
   SET TARGET pPROFIT 200
   ID = 1
ENDIF
//
// strategy 2
//
MyLongCondition2  = Rsi[14](close) CROSSES OVER  50
MyShortCondition2 = Rsi[14](close) CROSSES UNDER 50
IF Not OnMarket AND MyLongCondition2 THEN
   BUY 1 CONTRACT AT MARKET
   SET STOP   pLOSS   120
   SET TARGET pPROFIT 240
   ID = 2
ENDIF
IF Not OnMarket AND MyShortCondition2 THEN
   SELLSHORT 1 CONTRACT AT MARKET
   SET STOP   pLOSS   120
   SET TARGET pPROFIT 240
   ID = 2
ENDIF
graph ID

For the system it’s ONE strategy, so you can’t split the Capital among the two separate logical entries.

If you want to allow both entries go the same direction, then you need to allow accumulating orders, then do not check that you are onmarket when openuing a new piosition.

If, instead, you only want to allow them to go the opposite directions, then you have to bear in mind that the same strategy CANNOT open two opposite trades. So in this case you will need to resort to Stop & Reverse, thus closing the LONG trade when you want to go SHORT and viceversa.