Evening Daniel 
Here’s how I keep track of this sort of thing.
If I want to keep an eye on something more specific than a category’s transactions but less specific than a merchant’s transaction’s, I add an emoji to each transaction’s notes i.e. 
since I want to see how much I’m spending on those & make sure I don’t drink ‘too many’.
Then I can (in the iOS app at least) search for ‘last week’s’ transaction’s + that emoji.
Is this the sort of thing you were looking for?
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If you’re on Android though, you might not have quite the same search functionality..In which case, you’ll have to wait until the app gets to parity with the iOS app, which will be before the current accounts are fully rolled out 