Meaning of Initial payment in SIP of a mutual fund

Is Inital payment in SIP plan of mutual fund is just similar to a lumpsum amount. ?? For example in a particular mutual fund if i want to do a lumpsum and SIP too, then can i add that lumpsum amount as the inital payment in addition to the installments as SIP?? Are both meaning same??

On Coin, we simulate SIPs. Meaning each investment is essentially a fresh lumpsum investment.

Yes, you can.