new block in mainbody

Hello Gardner,

I want to make a new block in the mainbody - at the right of the content (bb-mastcol-top and bb-mastcol-bottom). .
I have made a block 'aanbevelingen' (see attachmentt)
But it is under the block of the mainbody.

I have searched the documentation and saw the videos but can't figure out how to adjust the mainbody in that way.

So I want the block 'aanbevelingen' directly under the block 'mast-col' (in the mainbody).


Best greetings and thanks again,

Hanneke