If you only have daz don't be confused by the repeated use of the phrase "poser content". In all likely hood its Daz content as well. I did a clean install on a computer that does not have poser recently so If that is your situation then this should help. I won't swear to it  being 100% accurate for mac however as I know nothing about them. If file structure is similar then this should apply.

When you install new items into daz they go in (depending on your computer set up and original install) drive studio is on/program files/Daz/studio/content. Any content you want in studio goes there. Some people use both poser and daz and they install in poser even for daz. But if your installing to daz basically it should go into that content folder.  The way the downloaded and unzipped (or daz installed) file works you will not in Daz see that runtime folder in your contents list. You should unless you have poser installed and have told daz to find that content then have in content a folder called content and a folder called studio. Content will end up with any non daz files. When I say Daz files I mean files ending .ds or .dsb. Those files can only be used by daz. It is where the files you create in the future with daz need to go and it is where files that are optimized for daz live. Content is everything else.

When you look at the file structure you will see daz a studio file inside it and then a various files like your contents folder, shaders, plugins and what ever else has been added into that studio only uses. Inside content will be more files. If you create files in daz they will end up in folders here. So for example I have a Calida file in here for my company files. If I save a scene or another daz file it ends up here or in a file I have created in daz to store things in. There is also a runtime folder. This is where all non daz specific files go. When you install to content if the files have been properly packaged they will drop right in here with no help from you at all. Be warned not all free content gets packaged properly and installed content can vanish on you. If that is the case then you can look into the runtime folder and see if any new files have suddenly turned up or if somehow you have a new runtime folder added somewhere inside the runtime folder (I''ve had that happen quite often). If that is the case drag it up to content and drop it back in. It will tell you there is already a runtime folder and that's fine just go ahead and let it put it in there. In most cases that will solve your problem. Some other problems are easy fixes once your more comfortable with the file structures. But what all of those files inside runtime would make a to long post even more over long -grin-

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Daz studio and Poser content creators