You can link your objectives to other objectives, creating parent - child hierarchies. This will allow you to break down an objective into smaller objectives, or to visually show the connection between objectives.
 

How to link an objective

In the detail view of an objective

Company objectives are all shown by default, but for objectives of people or teams you need to use the search function. 

Example: link a team objective

Search the name of the team and select it in the search results

Select the objective you want to link

Create a new objective as a child objective

How linked objectives are visualised

Impact on visibility

Linking objectives has an impact on the visibility of both objectives: anyone who can see one of the objectives, will now be able to see these two objectives are linked.