i assume you are referring to 'series link'. if this is available when you add a program to your planner you will see the green button option at the bottom simply saying series link. press green and an arrow will appear at the end of the program line indicating this program has been linked. two words of warning -
1 series link can be temperemenetal when trying to link a prog that is several days away i.e. wait until it gets closer
2 occasionally the little chuffer drops progs so you miss them.