URL for Online Order Sign in page

Partner is looking for an URL for sign in page for Online order.
They want to create a hyperlink of sign in URL on their website so that whenever customers clicks on the hyperlink, it redirects fist to the zenfoody sign in page.
It should be like https://esteesmuchoperro.zenfoody.com/login
After the OLO link it should be /login to login to the OLO website