The Regular Savings Plan (RSP) can be found under SaxoSelect which is shown in SaxoTraderGO in the Trading section, and listed as Managed portfolios under Markets in SaxoInvestor.
As SaxoSelect portfolios may involve investing in Specified Investment Products (SIPs), if you are unable to see the SaxoSelect/Managed portfolios section in your platform, you will need to complete the SGX Online Education Program and send the proof of your completion via Write to us on the platform.
For further details on requirements around investing in SIPs, please click here.
You may also want to visit the complete guide for RSP/SaxoSelect.