1.In the interface shown in Figure 1 below

click [Advanced], then click [Extensions], an interface will pop up.

Figure 1

2.Enter the URL in the input field: https://github.com/lzty634158/Tiny-bit Then click “search” or press the "Enter" key on the keyboard, as shown in Figure 2. You can search for the Yahboom software package, and then click SuperBit, as shown in Figure 3, you can successfully add the software package.

Figure 2

Figure 3

3.After loading the package, we can see that the program bar has loaded the building blocks made by Yahboom, as shown in Figure 4.

Figure 4

Now you can successfully add extension package to Makecode.