Thank for trying the toolbox, from the GUI you have the "Post > Animate" menu option in the which allows you to create animations with for example velocity vectors. If you want to plot curves as a function of time for certain point(s) the best option is to export the "fea" data and use the "evalexpr" function to evaluate the expression for your desired times (for example as done in the ex_navierstokes5 m-script example but for error checking instead of visualization)
https://www.featool.com/doc/evalexpr_8mhttps://www.featool.com/doc/ex__navierstokes5_8m