There seems to be a problem with articulations and dynamics, not being handled by / offered for some choice of instruments/type of exercises for customized levels.
In customized levels:
1) Rhythm and Tone sets type of exercises never show any kind of articulation despite the Staccato and Accents options being ticked
2) For melodic exercises, some instruments seem to be not handling articulations
Despite enabling Staccato and Accents, generated exercises with some instruments such as Mallets or Voice will never show any articulation (or am I missing something?)