Hello Declan,

Thank you for contacting Smartsheet Support.  At this time, Smartsheet does not support this functionality to lock a single cell; however, I have added a vote for this to our Enhancement Request list for our product team to consider for future versions of the software.  

We typically communicate about new or improved features once they've been released. Depending on the nature of the changes, we announce through email, in-product messaging, or via announcements on the Smartsheet Community(https://community.smartsheet.com) website.

At any time, you can see a list of past updates in our Release Notes(https://www.smartsheet.com/release-notes) on the Smartsheet website.

If you'd like to help us further improve Smartsheet with ideas on how Smartsheet could be better, or have other users vote for this functionality, please contact us here: https://app.smartsheet.com/b/form?EQBCT=739aa75f30ca43a8a22eb53e4da7d409

If possible provide as detailed information as possible about your feature enhancement request, including how you use Smartsheet, and how your request would save you time.

Please let me know if you have further questions on this.

Kind Regards,

Alison

Smartsheet Support

Please add my vote as well.

Add my vote too please - this is a feature that's been requested many times over the past few years.

Thanks you.

My company needs this feature as well!! Please add!!