Glossary in Master Study, selecting a subgroup twice

We are trying to build a glossary for our website within the Master Study Theme. It should be possible to first, select the first letter of the topic sought-after and then, select among all the topics with this previously selected letter. Therefore, we want to combine any of the following two WPBakery elements: Tabs, Tour and Accordion.

However, those elements seem to be mutually exclusive. Is there a way to combined multiple of these elements? Is there an alternative way to build a glossary?

Thank you for your answers and ideas!