You are misunderstanding.
There is Plan to Enroll (PTE), which does not involve a commitment, and Commit to Enroll (CTE), which does. You cannot do anything until the tool becomes active in your AMCAS portal on 2/19 (2/22 this cycle, since 2/19 falls on a Saturday and 2/21 is Presidents' Day), at which time you can select PTE, which is not a final selection, and, again, does not involve a commitment. You can change that as often as you like until you make a CTE selection, which IS final once made.
The ability to select CTE goes live on 4/30 (5/2 this cycle, since 4/30 also falls on a Saturday). It does involve a commitment, and requires you to withdraw from all other WLs. Temple does not require you to make this selection on 4/30 (or 5/2). Its deadline is 7/1.