Question : create vlans on GNS3 switch

I have used a router 3640 with NM-16ESW to emulate a switch, but I didn;t find a way to create vlans other  than the old way:

I went to:
Router# vlan database
Router(vlan)#vlan 20
VLAN 20 added:
    Name: VLAN0020
Router(vlan)#apply
APPLY completed.

I can't find a way to add ports to the vlan or do any work with the vlan?

any help?

thanks

Answer : create vlans on GNS3 switch

conf t
int fast1/1
switchport mode access
switchport access vlan 20
no shut
end
wr mem

Billy