1) Open your jenkins IHM and navigate to the job containing the TA test to execute.
2) In the left menu of your job click on : "Build with Parameters"
3) You should obtain the screen below
4) Set "run" in the field"operation
5) Define the test or the list of tests to execute :
5.1) You could give the list of tests to execute through a file. For that, set "{file:testsuite.json}" in the "testList" field then select the file in the "testsuite.json" field
5.2) You could give directly the list of tests to execute by by filling the "testList" field
You will find more details on the possibilities to define the list of tests to execute here.
6) If you use jenkins in master/slave mode, you could define the node to use for the execution of the tests by filling the field executor
7) Launch the execution of the job by clicking on "Build"