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1. We first open ocam and click "Menu" (as shown in the picture).

​ ​ 2. Then click "Options" in the menu (as shown in the picture).

3. Then we enter the "Settings" page and click "Effects" on the left (as shown in the picture).

​ ​ 4. Select "Left-click Effect" on the effects page (as shown in the picture).

5. Finally, we check "Add left mouse click effect" and click "OK" to set it up successfully (as shown in the picture).

The above is the entire content of how to add the left mouse click effect in ocam brought to you by the editor. I hope it can help you.