The problem with this function is that it also keeps selecting or activating the range that I just merged. How can I do it to activate or select the cell to the right of my merged range without the merged range still be part of the selection/activation?
function mergeColumns(){
var app =SpreadsheetApp;
var ss = app.getActiveSpreadsheet();
var activeSheet = ss.getActiveSheet();
var first = activeSheet.getRange(11, 61).getValue();
activeSheet.getRange(13,3,1,first).mergeAcross();
activeSheet.getRange(13,3,1,first).offset(0, 1).activate();
}