NO and no. I would not use glue to attach soft corals. Sorry I did not read the thread fully. I just caught the glue part.
To frag zoes you would do this like a mushroom and snip it at the base. You can take some rubble rock, add it in a drinking glass and let the zoe rest inside. All this will be inside the tank on the sand bed. Yes, just sit a glass in there with rubble and let the coral frags rest on the bottom. They will attach and you can remove and place them around the reef as you desire. It takes a week or two for them to attach. Hope this helps some.