As a company following the Objectives and Key Results method of performance management popularized by www.betterworks.com I can use the custom terminology feature of Aha to rename Goals to Objectives.
However I cannot rename the Success Metrics term that is a sub-field of Goals/Objectives to match the OKR term "Key Results".
See also idea (https://big.ideas.aha.io/ideas/APP-I-3190) to support an integration with BetterWorks.
Thank you for the note. At this time, we do not have plans for the ability to use custom terms for Success Metrics.
However, there is a workaround of creating a "Key result" custom field on Goals, which would yield the same result.