form controls
Form controls for dynamic charts: #1 spinner control, #2 slider/scroll control. Adding form controls to spreadsheets online would practically close the gap to share analysis / scenario spreadsheets. Please add the spinner control (first priority) and secondly the slider / scroll

Thanks for the feedback. We’ll consider this for a future release. Please continue to vote on this feature request which will increase its likelihood of getting in the product.
Could you further comment on the scenarios in which you would used these controls?
Thanks,
Scott [MSFT]
2 comments
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Anonymous commented
Id like to add checkbox functionality, as many users use them for validation.
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Michael Hutchens commented
Hi Scott,
Jose's request here is a little vague. More specifically, it would be great if Microsoft supported the use of Form Controls (which are accessed in the desktop version of Excel via the Developer tab as shown in the attached image) in Excel Online.
These controls are (and have always been) widely used by Excel desktop users, so it's debilitating that Excel workbooks containing form controls cannot be edited using Excel Online.
The same issue exists for comments, although I can see that you've deprecated these in favour of notes so that's not such a big issue.
I've added a post on MSDN about this issue here: https://social.msdn.microsoft.com/Forums/office/en-US/14e1d4af-7357-4e2f-8a1b-7c60fa9413c9/when-is-microsoft-going-to-add-support-for-controls-to-excel-online?forum=exceldev
Thanks, M.