AG2R Prevoyance membership

Both husband and I have successfully set up auto-entrepreneur business in France and received INSEE certificates. My auto-entrepreneur is the chambres d’hotes and I’ve not received anything further relating to social security / health cover etc. Will wait bit longer before querying. However my husband’s auto-entrepreneur is for 7022 Conseils pour Affaires et autres (although he works solely for UK building contractors).

We have received URSSAF notification confirming affiliation as required. Also two forms that would appear to relate to retirement - but my basic French is struggling to translate and therefore comprehend what is required. AG2R Prevoyance (Nevers): Demande adhesion, Prevoyance complementaire obligatoire: Createurs enterprise - Cadres (what are cadres?)

The form requires choice of 3 Formule - at different percentages. No of salaries - non cadres and cadres (again doesn’t make any sense). 2nd form (Retraite complementaire) is Choix des institutions d’adhesion (AGIRC et ARRCO) - how does one know which to choose? Neither of us have received papers re Maladie Assurance (RSI) though we are continuing to pay our top-up insurance cover. Also received request for info from local Hotel des Impots re determining rental value of part of our home used for business and if any prior commercial use - do you know if this will affect our Taxe Habitation?