DTH Development

Is it possible to sync locations with JEvents locations

No. The sync with JEvents is only title, date and time. The best way to use DT Register is without JEvents at all... and although that sync OPTION is there... we don't have any immediate plans to integrate it any deeper at this time.

I know that it is better to work DT alone... but I am missing a calendar module. That's why I am looking into JEvents...
Giving that, I am trying to have as deeper integration as it can to have the website working good.

If that's the only reason you are using JEvents... don't worry about further integration. We're working on a mini-cal module. That will be one of the next items we add.

Great news DT people!
However... for the time being... and as the website uses both DT and JEvents, I need to know if it is possible to make an already existing DT Event synced/linked to an existing JEvents event.
I see that if the event exists, there is no more the Choose Event Type option.
Can I make it again a JEvents Sync Event ? In database any changes ?

There is no built-in method to sync an already existing event. You have to create it that way. However, you COULD add a sync via the database.

Table: xxx_dtregister_group_event (where "xxx_" is the prefix of your database)

The second field is "eventId". For a non-synced event, this will be "0". Simply enter the ID number of your JEvents event here in place of the 0 and the sync will be added.

Thanx,
that saves me for what I have to do tonight!
When I will be done with the development of the new website, I will post a review in JED as you really deserve it!