When you put a 'Substitute' solve on a material it will ask for a catalog.
If you would like to pull from multiple catalogs, just leave this blank and put your catalogs of interest in your 'Catalogs to use' section of the System Explorer.
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To Chinese users:
Do not provide any information or data that is restricted by applicable law, including by the People’s Republic of China’s Cybersecurity and Data Security Laws ( e.g., Important Data, National Core Data, etc.).
不要提供任何受适用法律，包括中华人民共和国的网络安全和数据安全法限制的信息或数据（如重要数据、国家核心数据等）。