Signature box for Everyone / Anyone

Hi everyone, 

I'm looking to use Adobe Sign as a way to check the presence of people on virtual events. For instance, checking if those who are supposed to have attend webinars were actually there or, at least, say so. 

Thus, I'm having an issue with Adobe Sign because I have to manually click and drop the Signature box for each individual e-mail address. Do you know a way to bypass this? It is especially unconvenient when we have more than 50 people participating ... 

The ideal would be that we could have a signature box that would be clickable by Everyone or Anyone ... This way, each participant would write its own signature on his own line. 

Any ideas? Thanks a lot.