This page creates the first repository of the appliance and the bucket it stores its snapshots in.
The example uses a local directory/home/backupand a bucket nameddevcode, which gives the repository URIfs:///home/backup/devcode.
Vocabulary: the console calls the object a repository; Plakar calls the store a Kloset.
The bucket is simply the named directory that holds it, so that one storage area can host several independent repositories side by side.
/home/backup/devcode — does not need to exist. The console creates and initialises it for you at step 5.
Files Sharing > Backup service.

devcode. 
The URI field is read-only on purpose: a malformed URI is the most common cause of a repository that never opens. Click Build URI and let the assistant compose it.

/home/backup/devcode, then click Finish.
The assistant writes fs:///home/backup/devcode back into the form and aligns the repository type accordingly.
devcode-12345.
Keep the passphrase outside the appliance.
It is what protects every snapshot the repository holds.
Plakar has no escrow and no recovery: if the passphrase is lost and no copy exists, encrypted snapshots are unreadable, permanently.
The appliance does seal a copy in its own secret store, but that copy is bound to this host — it does not survive a rebuild on new hardware.
Adding the repository only records it. The Kloset store on disk is created by the check action.
/home/backup/devcode if it does not exist, then opens it to confirm it is readable.

On the appliance the store now looks like this:
ls -la /home/backup/devcodeCONFIGlocks/packfiles/
Back on the Service tab, the widget is no longer grey: the repository is designated, so the Plakar service can run and Default Repository shows devcode.

Files Sharing > Backup client to start writing snapshots into this repository.