I've so many runtimes but I left it for so long before I did anything about sorting it out.

One day I got the bug and started, it's so easy, now I do it automatically with everything and then burn it on a DVD for a backup so I never have to fiddle and sort through runtimes again.
 

I've one for each figure,clothing,sets,props and interiors,exteriors,nature,animals and more and have a tree levels within these folders.

I unzip or run Daz products to a folder in my Docs I created called Pzdownloads.
Throw out everything I won't need or want, create a folder and name it whatever the product is, drag the runtime into that and then move it to the appropriate Allruns folder.

My Allruns folders are separate folders I created i.e., AllrunsV4, AllrunsM4,AllrunsProps and more.
These are even broken down to different files within the particular Allruns folder.
AllrunsV4 has V4character, then types of characters, fairy,elegant,creepy,ethnic and so on.
Then it's just a matter of going to Preferences in Daz, click down Poser formats and add whether you want....btw I use Dazstudio 3 Advanced, not sure how things work with the new Daz.