Yes, you can.
We have found the Mentoring Lab to be one of the most friendly and encouraging groups we have been part of, with so many like-minded people. For this reason, we try to encourage everyone to post as themselves, so other members know who they are interacting with.
That being said, if you are not comfortable posting a certain question, we do have options for you to post anonymously.
Option 1: Use the 'Anonymous Question' feature on the homepage of your Mentoring Lab area (you may be prompted to sign in). One of the team will then post your question in the Mentoring Lab Facebook group on your behalf.
Options 2: Facebook has the option to post anonymously, go to Mentoring Lab Facebook Group, click 'Write something', select 'Post anonymously' (as shown below)