The phrase "to use this one" means to select a particular thing or option from a group of available choices. It implies that there are multiple options, and the speaker wants to specify the one they are referring to or prefer. Full definition
Vision Critical encourages you to review the privacy policies and terms of use of external websites before you submit any personal information to them. (visioncritical.com)
To conclude, gold has a number of uses in addition to being a store of value. (forexfocus.com)
The carrier has been approved for use for children between 15 - 45 pounds. (babycarrierhq.com)