given two keys:
Account Name:   produceracct
Public Key:     FIO8aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
Account Name:   claimaccount
...
clio set account permission produceracct maintenance '{
    "threshold": 1,
    "keys": [
      {
        "key": "FIO8aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
        "weight": 1
      }
    ],
    "accounts": [],
    "waits": []
  }
' 1000000000 active -p produceracct
clio set action permission produceracct fio.address burnexpired \
     maintenance 400000000 -p produceracct
clio set action permission produceracct fio.treasury bpclaim \
     maintenance 400000000 -p produceracct
clio set action permission produceracct fio.treasury tpidclaim \
     maintenance 400000000 -p produceracct
clio set action permission produceracct fio.fee setfeemult \
     maintenance 400000000 -p produceracct
clio set action permission produceracct fio.fee computefees \
     maintenance 400000000 -p produceracct
clio set action permission produceracct fio.fee setfeevote \
    maintenance 400000000 -p produceracct
now when using the second key, change the actor in FIO calls to the produceracct account, and specify -p produceracct@maintenance as the permission used when making calls.