Possibility for multiple users to add notes to a macro file

[silverback24]

I have made an automated macro file that runs a hold queue every 15 minutes. Now we are looking into the possibility for multiple locations being able to add notes for the lookup without all locations having to run the macro. I have experience with shared files and the issue is there is only one lookup sheet, and I do not trust the warehouse people to be able to work out issues with conflicting cell contents. Are there any alternatives?

Thanks in advance!