email groups

please advice is there way to create groups on separate tab in same form and then select different group from dropdown to send email.

You can check this guide, in order to change email recipients according to the answer given on a form.

https://www.jotform.com/help/167-How-to-Send-Email-Based-on-User-s-Answer

You can also setup the notifications to send to multiple email addresses: https://www.jotform.com/help/39-Send-Notifications-to-Multiple-Recipients