Form element for selecting school schedules/terms: start and end/duration

We're evaluating JotForm as a replacement to our self-hosted one – https://www.ualberta.ca/faculties-and-programs/english-language-school/academic-english-undergraduate-admission/apply/online-application – and I'm wondering whether your app provides an ability to replicate what we're doing here when it comes to selecting a schedule:

https://cl.ly/0i2l3P0q0g0E

a) "forcing" the users to select a consecutive range of terms (no gaps)

b) determining whether the range hasn't exceeded 12 months before letting them proceed

This was pretty straight forward to implement with Javascript on our custom-built form, and I'm curious if this is possible to implement in any way with JotForm's existing features.

(I should mention that it doesn't have to be a "checkbox input"-type of a field – we're open to changing it to any type of input/widget that does the job.)

Thank you

Unfortunately, this feature is not available with JotForm. I tried to setup some conditions using a test form and it seems that it is not possible to select the options with a single checkbox field. However, it may be possible to get this achieved by using custom code in the downloaded source code of the form. 

Let me run few more tests on this to see if I can find any solution or workaround in this regard. Once I find any useful information in this regard, you'll be posted here.

Thanks!