Maybe I’m just missing it, but I’ve tried every drop down menu on the new site, and I can’t locate a place to add a signature block to a post. If not, why not? I found it a useful feature.
Discourse by default does not support signature blocks.
There’s a plug-in that should add them, but it doesn’t appear to be installed on our Discourse-hosted system. It appears to be an official supported Discourse plug-in, I’m not sure why it isn’t installed but not activated.
I’ve asked about it in the Discourse meta forum, it appears it may only be available to hosted sites on the ‘enterprise tier’, which is a lot more expensive.