The installation and basic creation have been written in great detail by others, so I won't reorganize them. It's just a record here.
https://blog.csdn.net/hc_ttxs/article/details/79384535
When installing the plugin, you can directly install the default plugin.
Notice:
Need to modify Matrix Authority (Security Matrix) Check all authentication users or global users, anonymous users, √ The second button is read-only, otherwise you cannot log in again after logging out, and newly created users cannot log in either.