how to reproduce "book new effort"? / #1823

Tom,

I can't reproduce booking new efforts - is it "log hours for a project" or "log hours for slected task"?

When I log hours I get form Date / Duration.
I really don't understand duration behaviur.
After "log hours for selected task" I obtain calculated duration - different in different tasks. When I log hours for the same task again, I obtain different durations ie. 1,6h and 2,2h. Start time (not editable) is 02:00 a.m.

Tom could you explain this a little more?

Thx,
Radek