Hi,
If you are talking about EPM context bar then as far as know it is not possible, but it is possible through EPMContextMember formula. You can use formula like below.
Foe example If you wanted to show only Year in context then use below formula. similarly you can achieve your requirement.
=EPMContextMember("","time","level=year")
=EPMContextMember("","DIM_NAME","PROPERTY_NAME=PROPERTY_VALUE"
Hope this will solve your problem. 