Something I learned firsthand last year when I married my Senegalese husband.
There are three choices: monogamy, limited polygamy (up to 3 wives), or full polygamy (up to 4 wives). If no option is explicitly selected, polygamy is the legal default. Interestingly, once monogamy or limited polygamy is chosen, the decision is binding and cannot be changed later to allow more wives.
Fun fact: The current President of Senegal, Bassirou Diomaye Faye, openly has two wives!
Is there social pressure from brides or family to choose monogamy? Can someone have one wife if choosing polygamy? Why would anyone limit future options and chose the binding option of monogamy?