modx with minishop2 view all categories

Question

For example i have such structure of my application:

document1
document2
DemoCatalog
 Catalog1
 Catalog2
   SubCatalog1
   Subcatalog2
      SubSubCatalog1
 Catalog3
   SubCatalog1

How could i view only such structure:

 Catalog1
 Catalog2
 Catalog3

How could i display such navistructure with Wayfinder? if my DemoCatalog id is 6, i try so:

 [[Wayfinder? &startId=`6` &level=`0`]]

but it didn't display anything, what i do wrong? and how to solve my problem?

i use modx revo

Answer 1

So, i solve this so:

[[Wayfinder? &startId=`6` &level=`1` &where=`{"isfolder":"1"}`]]