It would be helpful to be able to group goals both logically and visually by a theme, this would work very well with the OKR (Objective Key Results) style of goal setting.
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This is possible today through custom fields. By creating a "Theme" custom field, you can then group and report on goals accordingly.
Learn more about custom fields here: https://support.aha.io/hc/en-us/articles/202000937-Add-custom-fields-across-Aha-