Millisecond Forums

I am connecting Inquisit to SONA as described in a previous forum post: https://forums.millisecond.com/Topic26185.aspx

From what I understand, the SONA IDs will be recorded automatically. 

However, I will also have participants that do the experiment from outside SONA, using just the Millisecond link. In that case, what's the best way to record their participant numbers? Should I create a separate experiment for them? Will their participant numbers be recorded separately? Or should I just ask for SONA IDs within the experiment to avoid this problem?

I'd appreciate your thoughts on this! Thanks.