How to generate member id

Dear Survey Solution Team

I am working on "Lesotho Integrated Labour Force Survey(2) and I need your help on how to make a unique ID for each household member, for example, household member id made out of household id + member number.

Each household member enumerated already has a unique identifier assigned by Survey Solutions, it is a composite of the interview__id variable and the member identifier within the household, e.g. MEMBERS__id if your roster is named MEMBERS. Both of these ID components are generated by the Survey Solutions automatically and can be found in the exported data.