Well, hello, it's actually very easy to find. You need to use a computer to operate on the official WeChat account. All right, let's talk about it in detail.

1, the computer logs into the official account of WeChat.

2. Select: Function-Add Function Plug-in from the left operation bar.

3. Find the "Custom Menu" (see the picture for details) and click "Add" to add the custom menu to the function plug-in.

4. Click Function-Custom Menu on the left side of the interface.

5. After entering, open this function, click the plus sign on the right side of "Menu Management" to add a first-level menu, up to three.

These are concrete steps. I hope my answer is helpful to you.