How to recover disappear's table

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I’v download the newest version. Before I changed some settings, the AI Peng that is on right side have two table, one is COMPOSER, another is CHAT, I can click the table name to toggle them. While I changed the settings , the two tables can’t display both. Now, I must use command to toggle between COMPOSER table and CHAT table.

Could anybody tell me how to set the settings for recover original fucntion?
Thank you for help.