It seems we are talking about different scenarios. I'm using Smart Config on a Master controller in order to configure the Branch Controllers. Branch Controllers can't be configured locally.
The IP helper menu for the VLANs I want to push the Branch is not available, it is not highlighted
I'm configuring the Smart Config using a dynamic template. In order to test it, I've removed the dynamic templated and upload a CSV with the static template and now I can use enter the IP helper value for each of the VLAN.