How to have 2FA SMS token redirected to another phone number?

There are several accounts that tend to normally be used by a household a simple example is online groceries accounts.

Those tend to not have the capability of having multiple accounts that aggregate (or even better having a household account that several user can access with roles: parents, childs..)

While that is not a thing, and most apply 2FA when logging in, this can be a big annoyance.

How to use a single account without always needing to ask the owner of the phone…