How to set up your OpenAI API key with SheetAI
Pre-requisites
Add OpenAI to SheetAI
You only need to do the setup once. You DO NOT need to do it on all spreadsheets.
You must be the creator of the spreadsheet you set up your API key on.
Click Extensions > SheetAI App > Launch and then enter your license key and Save!
Now you can close the Sidebar and start Using SheetAI() and other SHEETAI_ functions.
Make sure you use SHEETAI function in google sheets where you are owner, only then you can fetch your OpenAI API key.