How do you insert balloons in the sheet space without having to activate the model space?

Hi,

We have currently swapped over to OpenUtilities from Substation V8i.

In V8i I would refence my 3D Model into the sheet space of my new construction drawing. Here I would insert the balloons.

I have tried to follow this same process in OpenUlities but it will not let me insert the balloons. It states that the object is read only.

In order for me to use the 'Insert balloon tool' I have to first activate my reference???? but in do this it is placing the balloons in my 3D Model space???

Has anyone found another way to make this tool work in the sheet space of their construction drawings?