Hello,
Sorry for the inconvenience
Unfortunately, there is no option in Theme Settings to hide to completely and open it by clicking on the All categories itself. By default, WoodMart doesn’t include this type of conditional sticky navigation behavior. It requires customization and beyond our support policy.
Alternatively, you can use the categories element in the header builder:
https://postimg.cc/jnJwqfbb
It will display like this: https://postimg.cc/B8XqG0sW, and it will open by default or hover.
Best Regards,