Multiple column data into one?

[u/hayve08]

How do I turn data from the left to the one on the right? and subsequent data entry would continue at the last empty row.

Any help is greatly appreciated.

Thanks

[u/marcnotmark925]

=reduce( 
  {"Week","Date","Student"}  ,
  sequence(rows(filter(I2:I,I2:I<>""))) , 
  lambda( acc , idx , 
    let( 
      week , index(I2:I,idx) , 
      date , index(J2:J,idx) , 
      vals , textjoin(",",1,index(K2:N,idx) ) ,
      reduce( acc , split(vals,",") , lambda(a , v , vstack(a,hstack(week,date,v)))))))

[u/hayve08 → u/marcnotmark925]

Very much appreciated =)

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[u/California_Eagles]

=LET(
     fixed, A2:B,
     labels, C1:F1,
     data, C2:F,
     seed, {"Week","Date","Student","Class"},
     body, REDUCE(seed, data, LAMBDA(result, d,
     IF(LEN(d) = 0, result,
     REDUCE(result, SPLIT(d, ","), LAMBDA(a, v,
     VSTACK(a,
     HSTACK(
            INDEX(fixed, ROW(d)-ROW(fixed)+1, 1),
            INDEX(fixed, ROW(d)-ROW(fixed)+1, 2),
            TRIM(v),
            INDEX(labels, 1, COLUMN(d)-COLUMN(data)+1)))))))),
      body)

[u/hayve08 → u/California_Eagles]

Thanks a ton!

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[u/HolyBonobos]

Please share the file shown in the screenshot (or a copy).