Change 284632 had a related patch set uploaded (by Catrope):
Add namespace translation for Indonesian (id)

https://gerrit.wikimedia.org/r/284632

The exact name of a "sandbox" page, where the community would like to test out Flow: Wikipedia:Warung Kopi (Bantuan) (this will be subpage of the village pump)

The Sandbox is a testing-only page, like https://www.mediawiki.org/wiki/Talk:Sandbox or https://id.wikipedia.org/wiki/Wikipedia:Bak_pasir .

I recommend you create a sandbox in addition to the Village Pump page. That way, people can freely try out the Flow features (post/hide/edit/delete/etc.) without affecting a normal page.

Change 284632 merged by jenkins-bot:
Add namespace translation for Indonesian (id)

https://gerrit.wikimedia.org/r/284632

@Mattflaschen If that is the case, then I guess Wikipedia:Bak pasir Flow Wikipedia:Flow/Bak pasir will be fine.

That is because idwiki's sandbox talk page has a template stating that it is not a sandbox, although I have yet to see a useful talk page (so far, only vandalism and the reverts). So, to not interfere with what has been existed there since 2004, I think it is fine for the community to have another sandbox page dedicated for a certain purpose, like what we currently have for templates (https://id.wikipedia.org/wiki/Templat:Bak_pasir_templat).

Edit: on second thought, I think it is better to put it at Wikipedia:Flow/Bak pasir so it will be "scoped" under Wikipedia:Flow.

Any updates on this? To my knowledge id.wikipedia is now running on MediaWiki 1.27.0-wmf.22

@Catrope Thank you for your help.

We also need this page Wikipedia:Warung Kopi (Bantuan). You can replace the current redirect with a Flow board. Thanks :)

In T133254#2252944, @Kenrick95 wrote:

@Catrope Thank you for your help.
We also need this page Wikipedia:Warung Kopi (Bantuan). You can replace the current redirect with a Flow board. Thanks :)

I created this a few hours later, but I forgot to press save on this comment.

Thank you very much :)

Thanks Roan!