@ KMT - moved to testflight forum, https://testflight.apple.com/ does not say how an external tester can mark a testing complete before the test period is over. Is this possible, if yes, what shouldbe done?
Other than perhaps adding a comment via a feedback msg., I agree there is nothing mentioned at that link about a user being able to specifically flag a given testing cycle as complete on their end.
If this is something you'd like added to TF, feel free to make an enhancement request against the tools via the bug reporter/(suggestions) link below, adding your report # to your thread for reference, thanks and good luck.
