You can invest in SBI Magnum Global Fund by visiting the official website of SBI Mutual Fund. You need to register with a login ID and Password. Post registration, simply select the ‘Invest Now’ tab and choose ‘SBI Magnum Global Fund’ option. Enter your basic details along with PAN and select the mode of payment/amount. For SIP, you can select the frequency - monthly, quarterly, half-yearly or yearly. Once you have added your bank details, the amount will automatically get deducted from your account on a date specified by you.
For offline mode, you will have to physically visit any of the SBI Branches across India.