Partition editor seems to be missing options

I am trying to install the MediaWiki version.  I wanted to do a manual partition scheme. 

The partition editor seems to be missing options.  When ever I select an existing parition, it won't allow me to edit the partition.  I always get the same erro, "no root file system selected".

In past installs of various Ubuntu versions I recall more choices during the partition editor.  Normally I can choose mount point, create partition, delete, etc.

Is Turnkey only set up to use the entire disk?  No manual paritioning allowed?

The only choices during manual parition setup are:

• Guided Partioning
• Help

• Undo changes to partitions
• Finish partitioning and write changes to disk