When you sign up for a MiKashBoks Digital Osusu Group with an Africell number, your default payment source is the Afrimoney account associated with the phone number you register with.
You will then have the option of adding a second account, this is useful if you want to designate a friend or family member to make contributions on your behalf or you may have another mobile money account.
Check out this video to see or follow the screenshots below:
 Go to settings and click 'Connect with Payment Account' |  Click 'Add payment account' |  Pick your country and click on the payment account you wish to add (At the moment only Sierra Leone and Afrimoney are available) |
 Enter the mobile number. Remember it has to already have a valid Afrimoney account |  Enter the One Time Password (OTP), a six-digit code that will be sent via SMS to the number you have entered |  Upon entering the code, the payment account will be added. You can set it as the default account or remove it, by clicking on the three dots at the top right side |