Q1: How can I highlight the test(s) to plot its/their load-depth curve(s)?
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The following three methods can be used.

1. left click 

   .. figure:: ../source/img/selectTest2plotLoadDepth_1.gif
      :width: 1000
      :align: center


2. left click + crtl

   .. figure:: ../source/img/selectTest2plotLoadDepth_2.gif
      :width: 1000
      :align: center


3. left click + shift

   .. figure:: ../source/img/selectTest2plotLoadDepth_3.gif
      :width: 1000
      :align: center