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Just ask the question! No need to ask for permission.
Don't get disheartened if you don't get an answer right away — often community members leave themselves idle in the channel and check later. Ask your question(s) and review the logs later if nobody responds right away.
When you've built up a bit of experience, repay the community by providing some support yourself!
Note: It has been reported that this web chat is not working on IE9.T