Casual worker behind schedule, a little slow to find pro-forma documents (9)

'find pro-forma documents' is the definition.
I can't tell whether this defines the answer.

'casual worker behind schedule a little slow' is the wordplay.
'casual worker' becomes 'temp' (short-term or temporary worker).
'behind schedule' becomes 'late' (running late).
'a little' says to take the initial letters.
The first letter of 'slow' is 's'.
'temp'+'late'+'s'='TEMPLATES'

'to' is the link.

Can you help me to learn more?