Hello,
I NEED HELP 
I was wondering; when activating the questionnaire, we obtain the option "save the referrer URL." However, is it possible to keep the questionnaire in public mode while generating DIFFERENT URLs? Thus, the referral URL becomes interesting because there are several and we can trace, for example, which method brought in the most participants (instagram, facebook, linkedin, taking into account that each platform will have its own URL)
If so, how do you generate different URLs in public mode?

Thanks again !

You could add variables to the link for the open survey and then save this variable into hidden question in Limesurvey.

Oh interresting. Thank you for your response. But in the event that i have 100 supervisors and i want them to send a link to their employee and i want to be able to link the supervisor and their employee by the URL only (or with your respond; the hidden variable) i'll have to make a 100 copies of my survey ? And add a hidden variable in each ?
I don't have the possibilities to make a 100 copies in my LimeSurvey package.

But in the event that i have 100 supervisors and i want them to send a link to their employee and i want to be able to link the supervisor and their employee by the URL only (or with your respond; the hidden variable) i'll have to make a 100 copies of my survey ? And add a hidden variable in each ?

No. You add a variable to the normal survey URL. They all enter the same survey, with basically the same link, but you add a variable at the end. Limesurvey will look for the survey ID and guide them all to the same survey. There you can read the added variable into a hidden question and via this hidden question you can identify the supervisor.

Here a couple of links for inspiration:
www.limesurvey.org/manual/URL_fields
forums.limesurvey.org/forum/can-i-do-thi...-a-parameter-via-url

Or, if you could go down the path of a token based survey. You create a participant table including all supervisors. This way you will have a token per supervisor. Usually the standard setting is that each token can only be used once (uses left == 1). But in the token table you can increase this number.

For example let's say the maxium number of employees per supervisor is 50, then you can just set uses left to 50. Then the token or tokenlink can be used to fill 50 responses and then will stop working. If you want you can even put 5000.

I don't have the possibilities to make a 100 copies in my LimeSurvey package.

But, what LS package are you talking about? Because all packages of Limesurvey.org are unlimited in terms of number of surveys, only in the number of responses.
But anyway, you do not need to create more than one survey, as described above.

Hello Holch,

Is it possible to change the setting of "uses left == 1" and increase the number of uses for 1 token linked to 1 email address with the option "import participants from a CSV file"? I didn't find the option with CSV file (it only appears with "Add participant" or "Create dummy participants").

Or is it possible to change this option later, after importing my CSV file?

Thanks in advance for your time and your answer

Is it possible to change the setting of "uses left == 1" and increase the number of uses for 1 token linked to 1 email address with the option "import participants from a CSV file"? I didn't find the option with CSV file (it only appears with "Add participant" or "Create dummy participants").

Yes, this is possible. You just need to include the number of "uses_left" into the CSV file, besides the standard columns.

Whenever you are not sure on how to include things like that, create one (dummy) respondent via the GUI. Then export the token table as CSV. This will give you the structure and you can adapt your CSV accordingly, fill it and upload it.

For example, for one of my surveys the header of the exported CSV looks like this:
So in the column "usesleft" you can adapt the number of uses to your need, e.g. either give everyone just 1, or give everyone 10, or give individual limits to the respondents.

But I highly recommend to create one participant via the GUI, the export the CSV file and see how YOUR CSV file should look like. You can use this as your template.

And yes, you can also adapt the number of usesleft later, after importing. But then, afaik, you need to do it on an individual basis. So if you have a lot of participants you better include it already in the CSV file with all the other data.

But in case of a problem, you can always edit each respondent by clicking on the little pencil symbol in front of each respondent. E.g. yesterday I had the case, that one of my interviewers did something wrong and an ID was used and thus blocked. I could go into the respondent table, and adapt the usesleft and set it back from 0 to 1, so the token could be used again.