Je was op zoek naar: registration at the annual meeting (Engels - Latijn)

at the time
in perpetuam

at the beginning
ex principio

at the third hour
tertia hora

look at the girls.
aspice puellas.

at the bottom forever
ad fundum siempre

he's at the office.
in officio est.

adnotator, adnotatoris one who makes notes, note taker; observer; l:controller of the annual income;
adnotator

annalis, annalis book of annuals/chronicles; annals (pl.), chronicle, history, yearbooks; annale, annalis festival (pl.) held at the beginning of the year;
annalis