IPv6 SLAAC from the delegated prefix

My RouterOS 7.9.2 successfully sets up SLAAC based on RA and receives a delegated prefix as a DHCPv6 client. In order to advertise the delegated prefix I currently configure a static address via /ipv6/adress/add interface=LAN [u]address=::1[/u] from-pool=delegated. However, I’d like the RouterOS to use SLAAC instead.

Should I just use /ipv6/adress/add interface=LAN [u]eui-64=yes[/u] from-pool=delegated instead to get a SLAAC- like static address, or is there a way to self-advertise the prefix so I get EUI-64 with DAD?