How to use macros ?

Hello, i have a stepcraft 840. i'am using winpc-nc software.

i am trying to setup the automatic tool changer, but i connot test it, as it seems that i need to write a macro for it to work, which i believe i did.

But how can i run a macro in winpc-nc ? i've been looking in manual, but no explanation. please can someone explain to me exactly what are the steps to run a macro in winpc-nc ?

Thanks