Is there a way to de-activate a survey with an away message?

2. Is there a way to de-activate a survey with an away message? Our survey will be used for the school for certain dates, we would like it to deactive

It is possible to disable a form, please check this guide: https://www.jotform.com/help/180-How-to-Enable-Disable-a-Form 

And you can customize the form warning message as well: https://www.jotform.com/help/61-How-to-Change-Form-Warnings 

Let us know if you have more questions on this, and open a new thread if you have a different question or need anything else, we will be glad to assist you.