Nice to hear from you again. I believe you answered a similar question back in June:
Generally, you'd be able to create a User Macro or to modify the code directly, but as you mentioned, you are on Cloud, so neither of which are possible.
You may be able to get a similar behavior from the various table add-ons in Atlassian Marketplace. Please have a look at those and let me know if you have any questions!
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