Additional User Preference

Hi again

Really enjoying using the Pro version of this plugin but just wondering if there is any way of adding an additional “user preference” eg. there is already a way for users to choose whether to record their weight in kg, pounds etc (which is great!) but would love to be able to add an option where users could also record whether they will be using cm or inches to record other measurements (eg. waist, hip etc.)?

With many thanks in advance.

Nik