Go to one of the people in question > actions > take a payment
Fill out the payment information using the payment type "Cash"
Repeat for the second person and so forth.
Head over to your bank account by going to accounts > bank accounts > select your client account > then choose Make a Bank Deposit
Tick the two or more payments and then click Make a Bank Deposit - filling out the payment description
Once you have made the bank deposit, this will appear as one lump sum made up of the two payments under All Payment Groups.
Go to reconcile statements next and find your statement entry that needs to be linked
Click the actions button and choose Link as Payment or Deposit
Tick the payment this needs to be linked to and confirm Link as Payment or Deposit
Post the statement entry.