I need a script to clear certain cells in sheets when a button is pressed

Question

I have been going through the tutorials and other similar questions but I am unable to get a script to work.  I am needing a script that clears certain cells when a button is pressed.  In my case they are cells B5, B7, B9, B11, B15, and B19.  I have been trying for days to write a script but I cannot get anything to work.  I am new to this script writing thing and I have to say that I don't fully understand it which I know is a large part of the problem.  If someone out there can help I would greatly appreciate it.  I have a test copy of my sheet here if someone needs to look at it:  I would appreciate any tips or guidance.
https://docs.google.com/spreadsheets/d/12uRixdJLf2p5vPVPHMArHB8aoVsK6-Xyu8ISZCKJghk/edit?usp=sharing
This is the script that I found that I was basing my script on.
function clearRange() {
  //replace 'Sheet1' with your actual sheet name
  var sheet = SpreadsheetApp.getActive().getSheetByName('Sheet1');
  sheet.getRange('B7:G7').clearContent();
}

(I assume that the text following the // is to be removed fromthe script as it is just directions?)

Accepted Answer

Hello all, I apologize if this seems like a dumb answer because I know absolutely nothing about coding and very little about sheets, but I was able to find a solution that may be a bit easier then trying to create your own code potentially. so I dabbled around with all the answers posted here and could not for the life of me get the script editor to actually perform said script in my actual google sheets and had no way of transferring it to the sheet I was working on so I fiddled around with the record macro. I simply clicked record macro and then manually cleared out the cells I wanted to delete and then saved. Once I saved I then drew a crude button like image and assigned the macro to it by selecting assign script and then typing in the name I gave the macro......and well saved then clicked the crudely drawn button and presto! it cleared all the cells. Maybe this might be an easier solution to what you all are looking for possibly?

Alex Ivanov ✔ · Accepted Answer

Hi Brad!
 
Try my code 
 
function onOpen() {
  SpreadsheetApp.getUi()
  .createMenu('Reset sheet')
  .addItem('Based on a permanent ranges address list', 'userActionResetByRangesAddresses')
  .addToUi();
}
function userActionResetByRangesAddresses(){
  var sheet = SpreadsheetApp.getActiveSheet();
  var rangesAddressesList = ['B5', 'B7', 'B9', 'B11', 'B15', 'B19'];
  resetByRangesList_(sheet, rangesAddressesList);
}
function resetByRangesList_(sheet, rangesAddressesList){
  sheet.getRangeList(rangesAddressesList).clearContent();
}
The sample video
The sheet of samples
The Google Apps Script snippet (full code)
Get down ☟ the topic and you'll see ton of other samples for this case.