Dear @Siobhan Hannan,
Thank you for posting your question in the Microsoft Q&A forum.
Is it correct that the Source Sheet is Location, the sheet containing the actual list of options: "Online", "In person", "External site visit" (Range C2:C4)? And the Destination Sheet (Sheet1), is the sheet you are currently working on and where you want to create the drop-down cell in Column C?
Could you try Defining a Name for the range C2:C4 on the Location sheet, and then use that name =EventTypes instead of=Location!C2:C4 in the Source field of Data Validation?
If this is the case, the steps would be:
Define Name: Click on the sheet tab that contains your list (which appears to be the Location sheet). Select the cells containing the list (C2:C4). On the Formulas tab > Define Name > Define Name. Delete the current cell address and type a simple name without spaces or accents, for example: EventTypes.
Use in Data Validation: In the Data Validation dialog, in the Source field, type the defined name you created in Step 1, preceded by an equals sign =EventTypes.
If there’s anything I may have misunderstood, I would truly appreciate it if you could provide a bit more detail to help me better understand your needs.
Looking forward to your response!
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