What does "transfer between investments" mean?

"Transfer between investments" means that you will move your existing account balance for a particular fund according to your selected percentage or selected dollar amount.  For example, if you have 45% of your account balance in one mutual fund and want to move 100% of the fund's value into another mutual fund, you will need to enter 100% in the "from" column, not 45%.  If you enter 45%, you will move only 45% of the fund's value in that mutual fund.