BOAC is right. It depends on many factors:
1. Aircraft type,
2. your company C/L philosopy,
3. The contents of your C/L,
4. The situation,
etc.....
The major items on a typical App C/L are: Altimeter check & Radios & Nav aids settings. Once these major items have been accomplished, the C/L may be called for, hopefully without holding at any items.