Adding Kasa switches, Matter and non Matter

I know i need to add the TP Link integration to HA, but does the same integration cover Matter switches or is that a separate integration? I have a few three way switches, so that’s why they are not all Matter.

Can i install the switches in batches and link them afterwards, provided i record the addresses and locations? I assume i need to link them to the Wi-Fi using the TO Link app as well?