The phrase "indicated category" refers to a specific group or classification that is suggested or pointed out. It is commonly used to describe a particular group of things or people that are specified or highlighted. Full definition
If registering under the discounted student, doula or peer support category, please indicate the category in which you fall. (wplca.net)
«I have indicated the categories of vulnerability that we will prioritise, but I repeat that they are survivors of torture and violence, women and children at risk and those in need of medical care.» (politics.co.uk)
Thus it considered that, in that context, the words «policies for the supply of housing» indicated the category of policies at issue: the word «for» simply indicating the purpose of the policies in question. (ukscblog.com)