The is not a single button you push to fix everything. It is a mindset. It is the combination of disciplined folder structures, metadata mastery, smart use of DIM and manual installs, and leveraging powerful third-party scripts like the actual "Daz Content Wizard" by Dimension3D.
If you manage more than 100GB of content, this $15-$20 script pays for itself in a single day. daz content wizard
Stop scrolling through 400 poses. Use the "Filter by Figure Type" in the Pose Library. If you have a Genesis 8.1 Female selected, any G8F pose will be greyed out unless it specifically supports 8.1. Some third-party wizards sell "Pose Converter Scripts"—these are worth their weight in gold, automatically retargeting G8 poses to G9. The is not a single button you push to fix everything