مشاريع واستثمارات/كل الحراج

Anyone with experience in installment projects please join

Peace be upon you Guys, I want to open an online store for installments of phones and PlayStation devices, with simple installments until the amount is paid, with a guarantee for my rights. How do I do this? Do I have to open a commercial store and offer these services, or is an online store enough? Anyone who knows about these matters, please contact me privately, it's urgent.