First, you have to click on the purchase module.
Then you have to click on the Direct GRN as shown in the picture.
When the new interface is shown. Then select the supplier from the drop box. Enter the delivery date, enter the supplier reference if any, you can also add the dimensions and the delivery information it, You can choose the location where the good is being entered, and then ERP will select the unique reference automatically as a default.
Choose the item from the item description, then type the quantity, required delivery date, & price, before clicking Add Item. Repeat the same approach if there are more products. Then click on the Process GRN.
You can also add any other information & details in Memo.