With regards to getting more responses then Quota allows. I have noticed that the responses are "cancelled" when the last response that is meeting quota conditions is submitted. These responses are saved as "Finished", however, they all have different number of questions answered, so they may be hard to track. We have formulae based on the very last question. So I use filtering "is not empty" for finding only the complete responses.
Otherwise until the last response is submitted, Qualtrics doesn't "see" that quota is full"

I always set an embedded variable that contains the respondent's final status (e.g., complete, terminate, overquota). The variable is always set before an end of survey block. All quotas contain a condition that makes sure only completes are counted.

TomG Thanks for the suggestion. Would you be able to screenshot an example with how you typically do this for each status?
I assume Complete occurs after your last survey block.
Then the Terminate status would update after each Terminate block, right? So say, terminating on geography. Show Geography block. Immediately follow with branch saying if, say, non-US, change status to Terminate, End of Survey?
For the overquota, are you setting a branch that says, if particular quota is met, set status to overquota, and then End of Survey? Do you put that at beginning or end of survey flow? or both?

I typically have a lot of other stuff going on so screen shots might add confusion.
I initialize the status (don't use 'status' because it is reserved) variable to 'abort'.
For complete and terminate, I do pretty much what you describe.
For overquota, it depends on the quota. For a 'total' I would put it near the beginning of the survey flow. Otherwise, I treat it like a terminate: ask the question, if choice selected and quota for choice has been met, set status to overquota and end survey.

https://www.qualtrics.com/community/discussion/comment/23847#Comment_23847I've been taking this approach in some recent studies and found it to be much smoother. Thanks for help on this.

@TomG can you please explain how you setup the Overquota embedded variable again? Are you creating the new variables for each quota within branch logic (I don’t see a way to use existing quotas from the Quota Groups menu)? How do you go about creating overquota embedded variables for cross-logic quotas? 

Thanks.

‘Overquota’ can have different meanings depending on context. I’m going to assume you mean that when a response matches criteria for a quota and that quota has already been met, the response is ‘overquota’.  Generally, you would have a survey flow branch something like ‘if criteria AND quota has been met’ then set the status to overquota and end survey.

I generally don’t use cross-logic quotas. I use simple quotas with survey flow logic and embedded data fields where needed.