First, in Dashboard -> Settings, select Image upload.

Then scroll to the Watermarks below:

The default is disable, so just select Enable. The option Watermark user toggles below is to select which users' uploaded images need to be watermarked. All are selected by default, so you can select according to your needs.

There are 4 parameters in the above picture. Let me briefly introduce them.

Watermark position is the position of the watermark in the image. There are 9 positions to choose from, as follows:

You can choose according to your own preferences. I chose the lower middle position, and you can see the actual effect by looking at my pictures.

Watermark percentage is the percentage of the area of the image that the watermark occupies. I didn’t change it. The default value is 4%.

Watermark margin is the distance from the image border to the watermark image. I adjusted it to 35 and it seems appropriate.

Watermark opacity is the transparency of the watermark, you can set it according to your preference.