I can't seem to apply a masterpage (which has sub-site-specific branding) to only a single subsite.
If I try to 'Change the Look' of a site by applying a masterpage, I can only do it at the Parent-Site level instead of just the single subsite.
I notice that when I go to Site Settings > Change the Look > Design Manager > Publish & Apply Design I am redirected to Design Manager at the Parent Site Level.
What am I doing wrong?
If this is not possible, what are my options of having a one-pager with custom branding?