I'm trying to restrict the items shown in my multi-list. I've looked at articles like this: http://zacharykniebel.com/blog/sitecore/2014/june/26/constraining-the-sitecore-7-multilist-and-treelist-fields-with-and-without-search
I've tried implementing
DataSource=/sitecore/content/data/country sites&ExcludeTemplatesForDisplay=Country Site
But I'm still seeing both template types in my Multi-List.
Any suggestions of what else to try, I'm using Sitecore 8.2
Those parameters only work for Treelist fields not multilist fields. Change it to a Treelist or TreelistEx and it should work.