Hello,
1) Appearance > Menus > Screen options > enable Product categories.
About static block, copy and add the category link, for example – https://gyazo.com/88fd057d18fe79c36312f07cc314e51d > https://gyazo.com/24cad0b2a13bb9df653425c09e79558d
2) Appearance > Menus > All departments menu > delete Monitors item and add a new one. You can edit URL of this item directly because it is added as a product category, not a custom link.
Regards















