Mikrotik 1100 as management switch

Dear Sirs
Good day
Please help me to manage mikrotik 1100 as following:
port 1 will be wan port(6M) internet, this band will be distributed through port 2,3,4,as following:
port 2 will provide 2M to router let say tplink
port 3 will provide 3M to switch cisco
port 4 will provide 1M to pc

Please your early reply will be highly appreciated

Yours
jamal