On Kyte Web 💻
Access the Products menu on Kyte Web
Select the products you want to change the category for: either check the box at the top left to select all or click the boxes on the left side of each product individually
At the top of the screen, click on Category
Choose the new category to which you want to link the products
Click Change to confirm the modifications
It is possible to change the categories through the Mass update spreadsheet as well. See how to do it here!