On my Atelier (1.0.131 on Windows) I have a Server Explorer view on the Atelier perspective:

As well as offering + and x buttons with which to add and delete connections, it also gives me access to the properties of a connection for amendment.

If you don't have the Server Explorer tab visible, look for it as an option on Window\Show View

Francis, I think the idea of the "Developer Community Feedback" community/group is to discuss the behaviour of this community.intersystems.com website software.

I think your posting belongs better in the "Caché" community/group because that is the base product from InterSystems in which COS is implemented, and upon which Ensemble, HealthShare and DeepSee (which each have a separate community/group) are built.

I updated to 1.0.123 today and things are starting to function in this area. I understand it's a work-in-progress, but I'm glad to start testing it.

The Tools menu now offers two options, "Add-Ins" and "Templates". Both lead to a dialog titled "AddIn Template Wizard". First wizard page asks me to choose which connection to use. Second page has subtrees titled "Recently Used", "Custom Used" and "Stanard Add-Ins" (sic).

"Stanard Add-Ins" lists the same entries as I get from the equivalent Studio dialog, which is cool!

Some of my own add-ins that appear in this list seem to work without requiring any changes - also cool!

I have one that fails in Atelier but works in Studio, so I've opened a WRC ticket.

Keep up the good work.