NEED HELP - Advanced Text Filtering (Multiple Columns)

shelbyallen99 ,  I would like the answer this one if that can help

I want to be able to filter for: if the Q3 Engineer equals "John Doe" OR the Q4 Engineer equals "John Doe" OR the Q4+ Engineer equals "John Doe"

if you do not need slicer

a measure  =

calculate(count(Table[COlumn]), filter(Table, [ Q3 Engineer] ="John Doe" || [Q4 Engineer] = "John Doe" || [Q4+ Engineer] = "John Doe" ) )

If you need slicer. Create one independent name table with all names. DO NOT join this with table

Then try like 

measure =

var _name = allselected(Name[Name])

return

calculate(count(Table[COlumn]), filter(Table, [ Q3 Engineer] in _name  " || [Q4 Engineer] in _name   || [Q4+ Engineer] in _name ) )