English Social Sciences Psychology executive systems in the brain

Dear colleagues,
I find it difficult to understand the meaning of “engagement” in a table summarizing the functions of an executive system in the brain. The term “engagement” is listed together with “navigation” in this way:
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MAIN JOB (of the second executive system): NAVIGATION/ENGAGEMENT
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The second executive system is described as follows:

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The second executive system is organized within regions of the frontal and parietal lobes and the fiber bundles that connect them. This system is primarily responsible for navigating the environment, problem solving, and abstract reasoning. This is the system usually considered to govern executive functioning (although traditionally thought to be limited to the prefrontal cortex). During evolution, the frontal lobes became specialized to process timing, sequencing, and a memory for the future (remembering the consequences of current behavior). Meanwhile, the parietal lobes evolved to develop maps of external and internal space and to integrate these maps to use for spatial and imaginal navigation. It is in these frontal and parietal lobes that we find the mirror neurons that allow us to attune with and learn from others through imitation.
Together, the parietal and frontal lobes integrate to create our sense of space and time and navigate it with minimal conscious attention. When this system is damaged or disrupted, we experience difficulties in navigating space and disturbances in consciousness, functional abilities, and other executive functions. It is important to keep in mind that although we are able to talk about space and time separately, they are not divisible – none of us has ever experienced one without the other. The fact that the frontal and parietal lobes construct a unified space-time allows us to navigate them simultaneously and seamlessly. This is also the reason why somatic experience, somatic therapies, and sensory integration techniques can have a positive impact on intellectual, academic, and social functioning.

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What can “engagement” refer to in this context?
Thank you so much for your attention!