First of all, thank you so much for using the plugin.
Regarding your query, there is no such feature to merge the FAQs for now and you have to either use the individual FAQ for specific trips or the global FAQ which can be used as common FAQs among the trips.
However, we will list the feature as a requested feature and work on it in our future updates.
Also, if you want the feature immediately in your side, you can refer to Hire our Customizer service.
We have a problem with the global FAQ from the last update I think.
The Titles and the content in the setting page is still here but on the Trips pages you can only see the Titles and not the content anymore.
What do you think ?