I configured a solution in visualstudio.com with continuous deployment in an azure website.
I would like to create a custom build that lets me rebuild and deploy an arbitrary changeset. I created the build, but when I go to Queue a new build the Dropdown What do you want to build is disabled and locked with Latest sources.
How can I enable this selection?
I had this same issue using Visual Studio 2013 to queue a build from Visual Studio Team Services.
There is a Hotfix for VS 2013 listed on this MSDN page that fixed it for me.
http://msdn.microsoft.com/en-us/library/ms181722.aspx
If you are using Visual Studio 2013 with Visual Studio Team Foundation Server 2013, you might have problems modifying build process parameters when you queue a build. Get the KB 2898341 hotfix.