For companies wishing to practice rounding up/micro donations, it is necessary to start by creating a new salary item which must be typed "Donation":

At the employee level, you can choose whether to indicate a fixed amount or whether the program should round off the net salary:

If these donations are to be sent to the "Arrondi Solidaire" organization, in the company's parameters, check "Arrondi Solidaire Integration". This will generate an additional line in the menu allowing you to export a CSV file for transmission: