Hi,
You can achieve the desired result with a standard Column Chart as follows:
1. Edit your data source Initial View so that the Availability and Assigned measures appear in the Columns panel, with the Week dimension in the Rows panel, like the example shown below:
2. Assign the data source to a Column Chart and make sure the Swap Axes property is set to true as shown below:
Hope that gets you the desired result,
Mustafa.