CriticalPath and Baseline are functionalities that are not available in the Gantt out of the box. With regard to CriticalPath see this forum thread, in which it has been discussed.
I am converted this thread to Feature Request and made it visible in our Feedback Portal. This will allow the community to vote for these two functionalities and we will monitor the interest toward them. Many of the highly demanded features get approved by the team and implemented in future releases.
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