Selecting Table Entries 
Many options (for example, deleting table entries, changing field content, copying table entries to a task) require that you first select the table entries that you want to work on:
Selecting single table entries
Click the required table entry.
Selecting a block of table entries
Position the cursor on the table entry at the start of the block.
Choose .
or
Select the Select Block pushbutton.
Position the cursor on the table entry at the end of the block.
Choose .
or
Select the Select Block pushbutton.
The required block is selected.
Select all entries
Choose .
or
Select the Select All.
All table entries are selected.