Gtmhub allows you to set limits on the number of key results that each objective has. This way, you can focus and prevent key results from being too granular.
Perform the following:
In the bottom of the navigation pane, click Settings.
On the Configuration tab, click Methodology.
In Limit the number of key results per objective section, enter the maximum number of key results that an objective can have.
Enter a positive integer.
NOTE: If you leave the field empty, there is no limit applied to the number of key results created for one objective.