How to use on Edit function twice in same spreadsheet [duplicate] - google-apps-script

Question

I have script for Google Sheets that I collected on interwebs and got some help here. No I have 2 onEdit in conflict. I overcome that by creating script Trigger for onEdit2. It works but I don't think it is the best solution. Could you help get those two separated onEdit with if functions into one, please?
//Dependent Dropdown list
function onEdit(e){ // Function that runs when we edit a value in the table.
masterSelector(master1,master2,master3,master4);
var activeCell = e.range; // It returns the coordinate of the cell that we just edited.
var val = activeCell.getValue(); // Returns the value entered in the column we just edited.
var r = activeCell.getRow(); // returns the row number of the cell we edit.
var c = activeCell.getColumn(); // returns the column number of the cell we edit.
var wsName = activeCell.getSheet().getName();
if (wsName === masterWsName && c === firstLevelColumn && r > masterNumberOfHeaderRows) { // the if delimits the section sensitive to modification and action of the onEdit.
applyFirstLevelValidation(val,r);
} else if (wsName === masterWsName && c === secondLevelColumn && r > masterNumberOfHeaderRows){
applySecondLevelValidation(val,r);
}
} // end of onEdit
// addRow by checkboxes
function onEdit2(e) {
masterSelector(master1,master2,master3,master4);
//IF the cell that was edited was in column 4 = D and therefore a checkbox AND if the cell edited was checked (not unchecked):
if (e.range.columnStart === 4 && e.range.getValue() === true) {
var sheet = SpreadsheetApp.getActiveSheet(),
row = sheet.getActiveCell()
.getRow(),
//(active row, from column, numRows, numColumns)
rangeToCopy = sheet.getRange(row, 1, 1, 30);
sheet.insertRowAfter(row);
rangeToCopy.copyTo(sheet.getRange(row + 1, 1));
//Reset checked boxes in column 4
sheet.getRange(row,4,2,1).setValue(false);
}
}
Whole script is here, if needed.

Answer 1

A script cannot contain two functions with the same name. Rename your first onEdit function to onEdit1 (actually it will be better to assign a descriptive name) and the second function as onEdit2, then put them both in one function named onEdit and pass the parameter e to both of them:
function onEdit(e){
onEdit1(e);
onEdit2(e);
}
Related:
Two OnEdit functions not working together
Best Practices for Multiple OnEdit Functions
How to run multiple onEdit functions in the same google script (google sheets)?
Bracketing multiple onEdit functions