フォーラム利用者の中には、「解決済み」ボタンに気づかないか、あえて使わない人が多く、サポートトピックの大半が未解決のまま開いた状態になっています。
管理者やモデレーターもトピックを「解決済み」とマークできるようにすることは可能でしょうか？
Yes. Staff could solve all the topics. 
Check the “category” options with solved plugin.
Exactly, it’s under “Edit > Settings > Allow topic owner and staff to mark a reply as the solution”
Thanks for the swift responses! I don’t see an ‘Edit’ menu, and searching the Settings options for “Allow topic owner and staff to mark a reply as the solution” yields no results. I have this option, which is checked:
Menu - Admin - Settings - Plugins - Enable solved plugin, allow users to select solutions for topics
There are three other options on the Plugins settings page (also when I search settings for ‘solved’). They are depicted below.
Am I missing something?
You need to enable it per category. So edit the category, then head to the settings tab there.
Got it, thanks. ‘Allow topic owner and staff to mark a reply as the solution’ was already ticked, yet still there is no option for me as an Admin to mark a topic solved. For my own topics (ones which I created, in the same category) I can see this option. But not for topics created by others.
From your collective comments it sounds like I should have that option by now?
Look under the ‘…’ icon. For some reason, it’s hidden by default for moderators and admins.
@bartv Wow that got it, thanks! All done.