Sorting by 2 variables - sorting

Question

This is a follow up to my previous question that was answered: How to Not Transfer Blank Column to Master Sheet?
2 new questions.
How do I sort by 2 items? I need to sort by Person and their Status (ie Completed). In the status cell is also a date, I just want it to find the completed part.
How to skip if the status is completed? Both of these are for the page that has already been combined. Hope this makes sense.
Sample Sheet: https://docs.google.com/spreadsheets/d/1Y48N8W8CdaNlrxXopj5lnHTiNep33g_qA2-kTrPdt3A/edit#gid=130911536
function combineSheets() {
const sApp = SpreadsheetApp.getActiveSpreadsheet();
const months = ['January','February','March','April','May','June','July',
'August','September','October','November','December'];
const master = sApp.getSheetByName('Master');
const sourceData = [];
months.forEach(m=>{
let sh = sApp.getSheetByName(m);
let vals = sh.getRange(1,2,sh.getLastRow(),27).getValues().filter(r=>r[0]!='');
sourceData.push(...vals);
});
master.getRange(1,1,sourceData.length,sourceData[0].length).setValues(sourceData);
}

Answer 1

Note: In my example, I removed the Other Data columns from your example to make the sheet cleaner. I also added Person column.
Try this:
Sheet1:
Code:
function filternsort() {
var sheet = SpreadsheetApp.getActiveSpreadsheet().getSheetByName('Sheet1');
var sheet2 = SpreadsheetApp.getActiveSpreadsheet().getSheetByName('Sheet2');
var sheet3 = SpreadsheetApp.getActiveSpreadsheet().getSheetByName('Sheet3');
//get sheet1 data
var val = sheet.getDataRange().getValues();
var completed = [];
var notcompleted = [];
//start to 1 to exclude header
for (var i = 1; i < val.length; i++) {
if(val[i][5].toString().match(/Completed.+/)){
//add to array completed if it matches the word Completed in the Date Due column
completed.push(val[i]);
}else{
//add to array notcompleted if not match.
notcompleted.push(val[i]);
}
}
//insert header to the beginning of the array
completed.unshift(val[0]);
//set filtered values
sheet2.getRange(1, 1, completed.length, completed[0].length).setValues(completed);
//sort by Person
sheet2.getRange(2, 1, completed.length, completed[0].length).sort(1);
//insert header to the beginning of the array
notcompleted.unshift(val[0]);
//set filtered values
sheet3.getRange(1, 1, notcompleted.length, notcompleted[0].length).setValues(notcompleted);
//sort by Person
sheet3.getRange(2, 1, notcompleted.length, notcompleted[0].length).sort(1);
}
Sheet2:
Sheet3:
References:
Array.prototype.unshift()
Range.sort()
String.prototype.match()