Questions pertaining to specific curriculum (.e.g., PL-300 Power BI)

I'm wondering what others are doing to get help and questions answered that come up in the course of teaching curriculum tied to specific technologies or roles such as that for the pl-300 (Power BI Data Analyst) found here: https://learn.microsoft.com/en-us/credentials/certifications/data-analyst-associate/

I have several concerns with the consistency and the accuracy of some of the content.  Part of this could certainly be misunderstandings on my part, but is MS Learn prepared to set up spaces (within MS Learn Hub) where we can have questions answered by an MVP or those with specific knowledge of each exam area?  This would be extremely helpful.

Two issues currently of note that I would like answered within the current structure of receiving help:

1. The exam covers the calculate command, which would be obvious if you know anything about and/or are a user of Power BI.  However, to the best of my knowledge I can no longer find the calculate topic being covered anywhere in any of the linked learning paths on the page above.  Instead I had to go fishing to find another module that covers the command called "Modify Dax Filter Context" here: https://learn.microsoft.com/en-us/training/modules/dax-power-bi-modify-filter/.  It doesn't show being associated with any learning path at all.  
2. There is an associated "exercise" or lab assignment which is found here: https://microsoftlearning.github.io/PL-300-Microsoft-Power-BI-Data-Analyst/ that DOES mention the module "Modify Dax Filter Context," but as I said it is no longer part of the official curriculum shown as part of my original link.

These issues are still general enough to hopefully be clarified through this normal channel.  However, working through the modules myself I do run into issues or questions with some of the phrasing or content itself that would require knowledge of how Power BI works and be at least an intermediate user.  I realize some of this could be posted as questions to MS Forums not tied in directly to MSLE.  However, I think it would still be beneficial if there were separate channels WITHIN the MSLE community where we could network with others teaching the specific curriculums (and hopefully moderated by an MVP) where we could ask and answer questions of others tied to the teaching and use of the curriculum within our classes.