I've successfully created picklists from a Google sheet into a Google form following a tutorial (http://wafflebytes.blogspot.com/2016/10/google-script-create-drop-down-list.html) and Google's documentation, however I do not have the option to set a trigger on the Event 'From spreadsheet', as laid out in the the tutorials/documentation, so I must be missing a step and haven't been able to figure out what it is.
The result is that the options are not automatically updating and must be manually pushed. I would like to enable the options to be refreshed on open.
I do not have the option to updateForm + from spreadsheet, as pictured in those resources.
From tutorial
My options
What step am I missing? Or is this possibly a permissions issue (I am not owner of the documents, but I tried to reproduce this in docs I own and ran into the same issue)?
NOTE: I have not posted my script here because it's nearly identical to the one linked to in the tutorial.
Update:
I'm beginning more and more to think it has to do with our OAuth configurations or permissions. I even updated the manifest to explicitly authorize forms and sheets, but I'm still not offered sharing permissions. I will have our admin check in on this but if anybody has had experience in these matters, I'm all ears.