If you are unable to add directories as an installation source in YaST (the default system management tool for openSUSE), it is possible that the directories are not set up correctly or are not accessible to YaST. Here are some steps you can try to resolve this issue:
Make sure that the directories you are trying to add are accessible to YaST. This may involve checking the permissions on the directories and ensuring that they are readable by the user running YaST.
Make sure that the directories contain the necessary files for installation. YaST expects to find a specific set of files, such as RPM packages, in the directories you are trying to add. If these files are not present, YaST will not be able to use the directories as an installation source.
If you are trying to add a network share as an installation source, make sure that the network share is mounted and accessible to YaST. This may involve checking the network configuration and ensuring that the share is properly configured and mounted.
If you are trying to add a DVD or CD as an installation source, make sure that the disc is properly inserted and readable by the system. You may need to check the system's disc drive and ensure that it is functioning properly.
If you are still unable to add the directories as an installation source after trying these steps, you may need to seek additional help or guidance from the openSUSE community or a system administrator.