Just set SWTRG, don't worry about address. Here is an example:
To use that code, you have worried about, as you selected TC0, channel 0 (which will be the first of the nine addresses he asked for).
Its a nice example demonstrating the use.
Those are the aliases to the nine addresse he asked for:
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(TC0->TC_CHANNEL)[0], (TC0->TC_CHANNEL)[1], (TC0->TC_CHANNEL)[2]
(TC1->TC_CHANNEL)[0], (TC1->TC_CHANNEL)[1], (TC1->TC_CHANNEL)[2]
(TC2->TC_CHANNEL)[0], (TC2->TC_CHANNEL)[1], (TC2->TC_CHANNEL)[2]
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which can be found in the previous mentioned header files.
I found it very helpful, when reading the documentation, digging through the CMSIS-definitions (grepping for register names or values) to find example data structures.