If anyone has not used labels in IDR Log Search before I would highly recommend giving it a read through and seeing if it might be right for you:
https://docs.rapid7.com/insightidr/custom-alert-details/
Labels can be a good tool for organization and quickly being able to spot particular logs easily in log search without having to create or paste a query. Here are a few example queries (in simple mode) I have used for labels only, no investigations or notifications: