You can configure the chart according to your processes and needs in the “Issues” tab in the settings of all charts:

Open

 

 

Show only Bugs

In order to compare the progress of bug completion with other issue types you can create a specific chart with a custom JQL filter:

Open

Show only Stories

In order to compare the progress of story completion with other issue types you can create a specific chart with a custom JQL filter:

Show only Tasks

In order to compare the progress of task completion with other issue types you can create a specific chart with a custom JQL filter:

Filter a team, which uses a Component field to divide teams on one board