Rendez vous dans le sous-menu Devis / Commandes de votre espace MyBusiness et sélectionnez le devis souhaité

Once on the quote page (here, quote number S00082), click on the Action button, then Duplicate.

The new quote has been created (here, number S00083). You can modify its information, then click Save.

We can see that both quotes, S00082 and S00083, appear correctly in the Quotes / Orders submenu.

You have duplicated a quote !