Hello,
I'm not sure what you the 'as switch', if you mean you want to configure the SVF switch interface from trunk to access, please refer to the command below:
interface G0/0/1
port link-type access
port default vlan xx
Notice: In an SVF system, parent switches are identified and managed using their stack member IDs, and leaf switches are identified and managed using their leaf IDs. Therefore, interfaces on a parent switch are numbered in the format member stack ID/subcard ID/interface number, and interfaces on a leaf switch are numbered in the format leaf ID/subcard ID/interface number.