Managing contact groups

I can't manage my Hotmail contact groups anymore. There is NO reference anywhere to managing groups; I cannot add or delete contacts to a group, the address is my browser already starts with https://; when I go to Advanced Privacy settings, there is NO reference to HTTPS; there nowhere where I can even see who is in which contact group. I can still edit an individual contact but there is no option to add or delete them from a group. I do however still have the option to use contact groups for emailing - not much use if they are no longer current. Please help - this is a serious problem; I've looked everywhere in my Hotmail account and really can't find anything that will help in any way.