Expression Help Getting "Others"

[pnn44794]

Hello:

I have the following 3 existing expressions that provide the top 20 rows for VSI quantity, CPU's and Memory (GB).  I now have an ask to add one more row of everything else combined for Foundation *=VSI or in other words, a Others row.  Is this possible and if so, how would I do it?

Expression 1

If(Num(Rank(TOTAL Sum({<project_include_in_forecast = {1},project_is_active = {1},
estimate_include_in_forecast={1},estimate_is_active ={1}, [DM #]-= {'88888*'}, [Item Action]={'Add'} ,
Foundation *= {'VSI'}>} effective_item_qty))) < 21,
Sum({<project_include_in_forecast = {1},project_is_active = {1},
estimate_include_in_forecast={1},estimate_is_active ={1}, [DM #]-= {'88888*'}, [Item Action]={'Add'} ,
Foundation *= {'VSI'}>} effective_item_qty))

Expression 2

if(Num(Rank(TOTAL Sum({<project_include_in_forecast = {1},project_is_active = {1},
estimate_include_in_forecast={1},estimate_is_active ={1}, [DM #]-= {'88888*'}, [Item Action]={'Add'} ,
Foundation *= {'VSI'}>} effective_item_qty))) < 21,
  Sum({<project_include_in_forecast = {1},project_is_active = {1},
estimate_include_in_forecast={1},estimate_is_active ={1}, [DM #]-= {'88888*'}, [Item Action]={'Add'} ,
Foundation *= {'VSI'}>} CPUs))

Expression 3

if(Num(Rank(TOTAL Sum({<project_include_in_forecast = {1},project_is_active = {1},
estimate_include_in_forecast={1},estimate_is_active ={1}, [DM #]-= {'88888*'}, [Item Action]={'Add'} ,
Foundation *= {'VSI'}>} effective_item_qty))) < 21,
  Sum({<project_include_in_forecast = {1},project_is_active = {1},
estimate_include_in_forecast={1},estimate_is_active ={1}, [DM #]-= {'88888*'}, [Item Action]={'Add'} ,
Foundation *= {'VSI'}>} [Memory (GB)]))

Expression 4????

Thanks in advance.