Is it possible in FI-CA to skip a dunning activity in the same dunning procedure

Hi FI-CA experts,

Is it possible in FI-CA to sometimes skip a dunning activity in the same dunning procedure.

Example:

if due date > x days then execute activity of level 01.

if due date > x+y days then; If 'condition' is true then execute activity of level 02. endif. endif.

if due date > x+z days then execute activity of level 03.

Should I put the 'condition' in an Event which execute the activity?

Thanks