Clarification on RCM on Rent Payment for QRMP Dealers

Hello everyone.
I have a query regarding the Reverse Charge Mechanism (RCM) on rent, which is applicable from October 10, 2024.
For dealers filing quarterly GST returns under the QRMP scheme, my question is: when should the RCM be paid?
The GST portal automatically calculates the monthly QRMP payment when selecting the QRMP option, and generates the corresponding challan. However, this challan does not include RCM payments.
Should we manually add the RCM amount to the monthly challan, or is it better to wait and pay the RCM at the end of the quarter while filing the Quarterly GSTR-3B?
Please advise.